Changelog
Track the latest tool releases, feature enhancements, and bug fixes to help you work faster and more efficiently.
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August 2026
2026-08-19
- Fixed Offline & Private AI Text Detector only scoring the first few hundred words of longer documents in advanced mode; it now scores the entire document
- Offline & Private AI Text Detector now filters out duplicate, gibberish, and templated or code-like content before scoring so it doesn't skew the result
- Offline & Private AI Text Detector now shows a confidence score alongside its result instead of sometimes hiding the score on longer documents with plenty of real content
- Fixed Offline & Private AI Text Detector briefly showing outdated results when switching between Basic and Advanced mode
- Offline & Private AI Text Detector now scores your text when you click a new Check for AI button, instead of automatically a couple of seconds after you stop typing
2026-08-18
- Offline & Private AI Text Detector now scores text in a background thread so long documents no longer freeze the page, and its character limit is raised from 200,000 to 2,000,000
- Redesigned the tool listing on category pages to match the main tools catalog page
- Sitewide search results are now ranked by relevance, so a match in a tool's title or description ranks above one buried in its full page text
- Fixed the tool list in the footer staying empty until the page's JavaScript finished loading
- Category navigation tabs now highlight in each category's own color instead of one color for all
2026-08-17
- Launched Offline & Private AI Text Detector: get an instant AI-likelihood score from four writing-pattern signals, or add an optional local classifier model for a stronger second opinion, all scored directly in the browser with nothing uploaded, no signup, and no paywall
- Added five comparison pages for Offline & Private AI Text Detector, weighing it against GPTZero, Originality.ai, Copyleaks, QuillBot AI Detector, and ZeroGPT on signup requirements, free-tier limits, price, and whether your text ever leaves your browser
2026-08-16
- Published and Updated dates across tool, resource, and blog pages are now properly detected from real content changes, and that same date now flows consistently into each page's schema markup, sitemap entry, and on-page byline
2026-08-15
- Added 4 new device-specific guide pages to Browser Fingerprint & Privacy Leak Inspector, covering fingerprint checks on iPhone, Samsung Galaxy, MacBook, and Windows PC
- Launched 8 new guide pages for WCAG Contrast Checker, covering contrast checks on specific devices like the MacBook Pro M4 and iPhone 17 Pro, plus dark-mode text, brand colors, and button states
2026-08-14
- Launched 5 new guide pages for Regex Tester & Match Debugger, covering tasks like testing an email validation pattern, debugging catastrophic backtracking, and unit testing a regex pattern
- Launched 5 new guide pages for UUID v1, v4 & v7 Generator, covering tasks like choosing between UUID v4 and v7 for sorting and generating a batch of UUIDs at once
2026-08-13
- Launched 5 new guide pages for JSON Formatter, Validator & Tree Viewer, covering tasks like formatting a messy API response, validating JSON before a deploy, and reading large payloads in the tree view
- Added quick-reference tables and decision checklists to many tool guide pages, covering things like picking the right HTTP status code, resistor color codes, hash digest lengths, and valid JWT structure
- Finished rolling out improvements to navigation between articles and related tools
2026-08-12
- Fixed low contrast accessibility issues on the homepage and in the cookie banner
- The cookie banner no longer asks for ad-personalization consent, since the site's display ad integration has been fully removed
2026-08-11
- Redesigned the homepage to make browsing tools by category faster and to surface recent blog posts
- Fixed inconsistent article layouts across tool pages, blog posts, and resource pages, so the table of contents stays in the same spot instead of jumping around as you move between page types
2026-08-09
- Started rolling out improvements to navigation between articles and related tools
2026-08-08
- X.509 Certificate Inspector's live domain lookup now runs a quick bot check before fetching a certificate, keeping the lookup service available for everyone
- Fixed a bug where loading an example value in Aspect Ratio & Letterbox Calculator, Ohm's Law & Power Calculator, Decibel & SPL Cross-Domain Calculator, Dead Pixel & Flicker Test Suite's refresh rate calculator, Engineering Unit Converter, and Electrical Unit Converter stopped highlighting which field it filled in
- Added dedicated conversion pages for Decibel & SPL Cross-Domain Calculator, Aspect Ratio & Letterbox Calculator, Ohm's Law & Power Calculator, Engineering Unit Converter, Electrical Unit Converter, and Dead Pixel & Flicker Test Suite, tied together with each tool's reference and code example pages so related conversions are easier to find
- Added product recommendations to more guide pages across the site, including certificate inspection, gradient design, hashing, redaction, and SQL guides
2026-08-03
- Finished rolling out dedicated reference and code example pages for the rest of the tools on the site
- Fixed example links on reference pages loading tools with the wrong preset values
2026-08-02
- Started rolling out dedicated reference and code example pages for many tools
- Improved the reliability of the automatic cache warm-up that runs after each deploy
2026-08-01
- Fixed a caching bug that stopped static files like JavaScript bundles and fonts from getting their proper cache lifetime
- SQL Data Workbench's 33 MB database engine file is now cached at the edge instead of the origin server, speeding up the tool's first load
- Cache warm-up after each deploy now benefits visitors worldwide, not just those near the origin server
July 2026
JULY 2026 SUMMARY
Tools
- 3 new tools launched in July: Regex Tester & Match Debugger, JSON Formatter, Validator & Tree Viewer, and WCAG Contrast Checker
- Prompt Token Counter added newer models across providers, including Claude Opus 5, Claude Sonnet 5, Gemini 3.6 Flash, the GPT-5.6 lineup, Kimi K3, MiniMax M3, and Grok 4.5, with pricing and context windows refreshed
- IndexNow URL Submitter now retries rate-limited batches automatically and submits through an alternate relay before falling back to the standard route
- Fixed parsing and layout bugs in URL Encoder / Decoder and JWT Decoder & Claims Inspector, and changed Web MIDI Keyboard & Latency Tester to list detected devices in a dropdown instead of auto-connecting to the first one found
Blog
- The blog published 15 new posts in July, with buying guides leading alongside guides, hardware, developer-tools, audio, and security-privacy coverage
- Posts paired recent tool launches with practical guides, including local SQL and log tooling, MIME type lookups, and P2P connection diagnostics, plus buying guides on VPNs, mechanical keyboards, Wi-Fi 7 routers, and power banks
Knowledgebase
- Grew from 896 to 974 articles while holding steady at full coverage across all 40 tools
- Most of the month's knowledgebase work went into adding related product recommendation widgets across existing articles, alongside a formatting pass wrapping commands and parameters in inline code
Site
- Added related product recommendation widgets across tool pages, blog posts, and knowledgebase articles, together with a new page explaining how these picks are chosen
- CapyToolkit became available to install directly from the Microsoft Store, alongside a reliability pass on the app install prompt and background offline caching
- Added structured author and social trust markup to strengthen search visibility
- Various UI/UX and blog quality improvements
2026-07-30
- Fixed an issue where a background update could suddenly reload the page you were reading right after a new version deployed
- Redesigned the install-app prompt with clearer copy, and fixed it popping up immediately after you dismissed the cookie banner instead of waiting until you were actually idle
- Improved the cookie consent banner's styling and layout, including a fix so it no longer breaks on narrow screens
2026-07-29
- Fixed URL Encoder / Decoder treating an entire URL as a single query parameter when it had no query string but contained an equals sign elsewhere, such as in a base64-padded path segment
- Fixed long, unbroken parameter names in URL Encoder / Decoder overflowing their column and overlapping the value field
2026-07-28
- CapyToolkit is now available to install from the Microsoft Store
- Prompt Token Counter now tracks Claude Opus 5, Claude Sonnet 5, Gemini 3.6 Flash, the GPT-5.6 Sol/Terra/Luna lineup, Kimi K3, MiniMax M3, and Grok 4.5, with pricing and context windows refreshed across the full model list
2026-07-24
- Fixed an issue where some pages could show an offline message even when you had a working connection
- The site now automatically keeps the tools catalog, category pages, and every tool ready for offline use in the background, so more of the site works without an internet connection
- Improved the reliability of installing CapyToolkit as an app and using it offline
2026-07-16
- Fixed the expiry badge in JWT Decoder & Claims Inspector running into the timestamp next to it with no spacing, and restored its colour and border styling
2026-07-13
- Web MIDI Keyboard & Latency Tester no longer connects to the first detected MIDI device automatically; it now lists detected devices in a dropdown and only starts reading input once you click Connect
- IndexNow URL Submitter now automatically retries a batch that comes back rate limited before reporting it as failed
- IndexNow URL Submitter now submits through an alternate relay first, only falling back to the standard route if the relay is unreachable or also rate limited
2026-07-09
- Launched WCAG Contrast Checker: test any foreground and background pair against WCAG 2.1 AA and AAA thresholds for normal text, large text, and UI components, with one-click fix suggestions that keep your hue and a color blindness simulation preview
2026-07-08
- Launched JSON Formatter, Validator & Tree Viewer: pretty-print, minify, and validate JSON with syntax highlighting, a lazy tree view for exploring large payloads, and a jump-to-error button that selects the exact failing line
2026-07-07
- Launched Regex Tester & Match Debugger: live match highlighting with capture group inspection, replace preview, pattern unit tests, a plain-English explainer, and shareable links, plus a built-in guard that stops runaway patterns from freezing the tab
June 2026
JUNE 2026 SUMMARY
Tools
- 4 new tools launched in June: URL Encoder / Decoder, CSS Gradient Builder, Password Entropy Analyser, and UUID v1, v4 & v7 Generator
- Prompt Token Counter expanded to 35 AI models across 15 providers with live-updating pricing and context window data, later growing to 37 models with a dedicated context window column
- Resistor Color Code Calculator added SMD resistor support across three code formats and a redesigned band selection interface
- Password Entropy Analyser corrected its bcrypt crack-time estimates to use the cost factor OWASP recommends for modern password storage
Blog
- The blog published 16 new posts in June, with general guides leading alongside buying guides, developer-tools, and security-privacy coverage
Knowledgebase
- Grew from 607 to 896 articles and expanded coverage from 28 to all 40 tools, closing out full knowledgebase coverage across the catalog
- Spent much of the month strengthening existing articles: adding sourced footnotes throughout, and rewriting thin sections to bring every article up to full depth
Site
- Launched sitewide search, making it possible to find any tool or article directly from the header
- Added security headers to harden the site against common web vulnerabilities
- Various UI/UX improvements
2026-06-28
- Launched UUID v1, v4 & v7 Generator: generates UUID v1, v4, and v7 in five display formats (Standard, UPPERCASE, No Hyphens, Braces, URN) with per-row copy, all client-side using the browser's CSPRNG
2026-06-27
- Resistor Color Code Calculator now supports SMD (surface-mount) resistors with three code formats: 3-digit, 4-digit, and EIA-96, decoding the printed marking into ohm value and tolerance
- Resistor Color Code Calculator band selection now uses a labelled card list showing each band's current colour, name, and role (digit, multiplier, tolerance, or temperature coefficient)
- Improved the through-hole resistor body illustration in Resistor Color Code Calculator with a richer ceramic shading gradient
- Fixed the active-band highlight ring in Resistor Color Code Calculator that was clipped by the resistor body container
2026-06-15
- Prompt Token Counter context column now shows each model's total context window size alongside the usage percentage, so you can see the window limit at a glance without leaving the tool
- Prompt Token Counter Google section updated to Gemini 3.1 Flash-Lite, Gemini 3.1 Pro Preview, and Gemini 3.5 Flash, replacing the previous Gemini 2.5 series models
- Prompt Token Counter now includes Qwen3.6 35B and Qwen3.5 397B, bringing the total to 37 models
2026-06-14
- Prompt Token Counter now covers 35 AI models from 15 providers, up from 11, with all prices and context windows sourced from live data, including Claude Fable 5, Opus 4.8, Google Gemini 2.5 Pro, Flash, and Flash-Lite, OpenAI GPT-5.5 and GPT-5.4 series, DeepSeek V4 Pro and V4 Flash, xAI Grok 4, Grok 4.3, and Grok Code Fast, Kimi K2.6, MiniMax M2.7, GLM-5 and GLM-5.1, Devstral 2 123B, Amazon Nova Premier and Nova Pro, Nvidia Nemotron 70B and Nemotron 3 Super 120B, and Perplexity Sonar Pro
- Prompt Token Counter input and output costs per million tokens now update automatically from a live AI pricing database at least once per day, so prices stay accurate across all 35 models without manual edits
2026-06-09
- Launched Password Entropy Analyser: calculate Shannon entropy bits and estimated GPU crack times across four hardware tiers for any password, with offline zxcvbn pattern analysis, nothing uploaded
- Corrected the bcrypt crack-time estimates in Password Entropy Analyser to model cost factor 12, the setting OWASP recommends for modern password storage, with sourced Hashcat benchmark figures
2026-06-07
- Launched CSS Gradient Builder: design linear and radial CSS gradients visually with live CSS, Tailwind, and CSS variable output
- Fixed the Copy button width in CSS Gradient Builder that would resize when the confirmation label appeared after copying
2026-06-06
- Launched URL Encoder / Decoder: percent-encode and decode URLs and query strings with component-level parsing, entirely client-side
2026-06-02
- Fixed the entropy score calculation in Browser Fingerprint & Privacy Leak Inspector that overstated bit estimates when browser signals returned no value
May 2026
MAY 2026 SUMMARY
Tools
- 24 new tools launched in May, the busiest month yet, including SQL Data Workbench, Big Log Explorer, Prompt Token Counter, X.509 Certificate Inspector, Cloud Config Sanitizer, HTTP Status Code Reference, Hash Generator, Webcam A/V Sync & Latency Meter, IndexNow URL Submitter, MIME Type Reference, P2P Network Tester, Offline OCR & Document Redactor, PII Scrubber, and Browser Fingerprint & Privacy Leak Inspector, alongside a set of calculators covering colour, units, subnetting, Base64, case conversion, Ohm's Law, aspect ratio, and decibels
- SQL Data Workbench gained support for Arrow, Feather, CSV, JSON, Avro, DBF, and Excel files, plus CSV, JSON, Excel, and Parquet export options
- PII Scrubber expanded credential detection to cover AWS, GitHub, GitLab, Slack, Stripe, Google, SendGrid, Twilio, and npm tokens, along with JWTs and database connection strings, and fixed a gap in IPv6 address detection
- Dead Pixel & Flicker Test Suite added a VRR flicker test and a PWM backlight flicker test
Blog
- The blog published 36 new posts in May, its biggest month yet, expanding into two new categories, buying guides and general guides, alongside continued audio, developer-tools, hardware, and security-privacy coverage
- Posts covered new tool launches like SQL querying, log exploration, certificate inspection, and PII scrubbing, plus deeper guides on subnetting, hashing, headphone buying, and gaming peripheral specs
Knowledgebase
- Launched a knowledgebase spanning 28 tools with 607 articles by month's end, covering technical deep dives, comparisons, and lookup references tailored to each tool
Site
- Added offline support and an installable app experience, so tool pages keep working without a connection and can be added to your home screen or desktop
- Unified the design system across tool pages for a more consistent layout and navigation experience
- Various UI/UX and reliability improvements
2026-05-31
- Launched MIME Type Reference: search the full MIME database by file extension or type name, with RFC source links
2026-05-29
- Fixed the default API key and verification file instructions in IndexNow URL Submitter that caused a mismatch between the pre-filled key and the key filename, leading to 403 errors on submission
2026-05-23
- Launched IndexNow URL Submitter: submit URLs to Bing, Yandex, Naver, and other IndexNow-compatible search engines in batches, without a CMS plugin
- Dead Pixel & Flicker Test Suite now includes a VRR Flicker test and a PWM Backlight Flicker test to check for brightness oscillation and backlight pulse dimming
- Fixed the results display in IndexNow URL Submitter where batch detail rows and domain group headers were not rendering correctly
2026-05-20
- Launched HTTP Status Code Reference: searchable reference for all HTTP 1xx–5xx status codes with usage notes and resolution steps
- Launched Hash Generator: compute MD5, SHA-1, SHA-256, SHA-512, and HMAC hashes for text and files, all processed locally
- Launched Webcam A/V Sync & Latency Meter: measure the millisecond offset between your webcam and microphone for precise OBS calibration
- Fixed the "Copy Markdown" button width in HTTP Status Code Reference that would resize when the confirmation label appeared
2026-05-19
- Launched Big Log Explorer: filter, search, and graph log and JSONL files up to 500 MB locally using Web Workers, nothing uploaded
- Launched Prompt Token Counter: count tokens for GPT-4o, Claude, and Gemini client-side and preview context window usage and estimated cost
- Launched X.509 Certificate Inspector: paste any PEM or DER certificate to inspect validity dates, SANs, key algorithm, and chain depth, client-side
- Launched Cloud Config Sanitizer: validate Kubernetes, Terraform, and YAML manifests for secrets and security issues locally, and generate a sanitized copy
2026-05-18
- SQL Data Workbench now reads Excel formula results, rich text cells, and cells containing errors correctly
2026-05-17
- Fixed Arrow and Feather file loading in SQL Data Workbench that caused silent failures for files in certain Arrow IPC encoding variants
- SQL Data Workbench now accepts Arrow, Feather, CSV, JSON, Avro, DBF, and Excel files through the file picker
- SQL Data Workbench export panel now offers CSV, JSON, Excel, and Parquet download options, replacing the previous CSV-only button
2026-05-16
- Launched SQL Data Workbench: run SQL queries on local Parquet and SQLite database files directly in your browser using DuckDB, with nothing uploaded
- SQL Data Workbench schema panel now displays row counts and shows a hover indicator on table names
- Fixed IPv6 address detection in PII Scrubber that missed compressed address formats
- PII Scrubber now detects additional credential types including AWS, GitHub, GitLab, Slack, Stripe, Google, SendGrid, Twilio, and npm tokens, as well as JWTs and database connection strings
2026-05-13
- Launched P2P Network Tester: test WebRTC peer-to-peer latency, jitter, and packet loss between two browsers without any cloud relay
- Fixed connection failures in P2P Network Tester on some browsers where unsupported SDP attributes caused the session description exchange to fail
- Launched Offline OCR & Document Redactor: extract text from images and PDFs and redact sensitive regions using Tesseract WASM, nothing uploaded
- Aspect Ratio & Letterbox Calculator now shows clearer step-by-step instructions and includes a visual letterbox preview
2026-05-08
- Launched Decibel & SPL Cross-Domain Calculator: convert between dB, watts, volts, and SPL with a built-in formula reference
- Decibel & SPL Cross-Domain Calculator now includes a Clear All button to reset all fields at once
- Launched PII Scrubber: detect and redact PII, credentials, and internal data from text before sending it to AI tools, all client-side
- Fixed detection patterns in PII Scrubber that caused private key blocks and internal domain names to be missed or replaced incorrectly
2026-05-07
- Launched Text Case Format Converter: convert text between camelCase, snake_case, SCREAMING_SNAKE, kebab-case, Title Case, and more
- Launched Ohm's Law & Power Calculator: solve for voltage, current, resistance, or power by entering any two known values
- Launched Aspect Ratio & Letterbox Calculator: resolve display resolutions, scaling, and letterbox bars for any aspect ratio
2026-05-06
- Launched IPv4 / IPv6 Subnet & CIDR Calculator: calculate network ranges, broadcast addresses, usable hosts, and wildcard masks for any CIDR block
- Launched Base64 Text & File Encoder/Decoder: encode or decode text and files to Base64, fully client-side
2026-05-04
- Launched Browser Fingerprint & Privacy Leak Inspector: see the canvas hash, WebGL renderer, audio fingerprint, installed fonts, and 30+ other signals your browser exposes, with nothing sent anywhere
2026-05-03
- Launched URL Parser & Inspector: decompose any URL into its protocol, host, path, query parameters, and fragment
2026-05-02
- Launched Color Format Converter: convert between HEX, RGB, HSL, HSV, OKLCH, and CSS named colours
- Launched Engineering Unit Converter: convert SI, imperial, and domain-specific units across 17 physical dimensions
- Launched Electrical Unit Converter: convert electrical units across 15 dimensions including charge, current, voltage, resistance, and capacitance
- Engineering Unit Converter and Electrical Unit Converter now show a brief theory and history note for each measurement category
April 2026
APRIL 2026 SUMMARY
Tools
- CapyToolkit launched this month with 13 tools covering hardware diagnostics, security, and everyday utilities: Dead Pixel & Flicker Test Suite, Webcam Lighting & Framing Analyzer, Microphone Quality, Noise & Latency Tester, File Hash Verifier, EXIF & Image Metadata Scrubber, JWT Decoder & Claims Inspector, Input Lag & Mouse Polling Rate Tester, Resistor Color Code Calculator, Speaker Frequency Sweep & Resonance Tester, Web MIDI Keyboard & Latency Tester, Cron Expression Parser & Next-Run Preview, Flesch-Kincaid & SMOG Readability Scorer, and Gamepad & Joystick Drift Tester
- Dead Pixel & Flicker Test Suite picked up a redesigned test launcher, a toggleable cursor during colour fill tests, and improved keyboard navigation and screen reader support
- Input Lag & Mouse Polling Rate Tester and Web MIDI Keyboard & Latency Tester both gained a live preview shown before a session starts, and a polling rate accuracy fix landed for the input lag tool
Blog
- The blog launched this month with 8 posts tied to April's tool launches, spanning hardware diagnostics, audio testing, developer tools, and security topics
- Early posts paired each new tool with a practical how-to guide, covering topics like gamepad drift diagnosis, webcam lighting analysis, JWT inspection, and monitor dead pixel testing
Site
- CapyToolkit launched and rebranded with a new light and dark theme and a navigation overhaul, alongside a sitewide accessibility pass to meet WCAG 2.1 AA
- Added a cookie consent banner with an analytics opt-out, and integrated a contact form for reader and user feedback
- Various UI/UX improvements
2026-04-30
- Launched Gamepad & Joystick Drift Tester: diagnose analog stick drift and dead buttons directly in your browser
2026-04-27
- Launched Flesch-Kincaid & SMOG Readability Scorer: score any text with Flesch-Kincaid Grade, Flesch Reading Ease, and SMOG index, with sentence-level highlights showing where complexity spikes
2026-04-25
- Launched Cron Expression Parser & Next-Run Preview: translates cron syntax into plain English with a next-run preview
- Web MIDI Keyboard & Latency Tester now shows a piano keyboard skeleton preview before any MIDI device is connected
- Input Lag & Mouse Polling Rate Tester now shows a live output preview before a session starts
2026-04-24
- Launched JWT Decoder & Claims Inspector: inspect the header, payload, and expiry of any JWT token client-side
- Launched Input Lag & Mouse Polling Rate Tester: verify mouse polling rate and browser input latency using PointerEvents, fully local
- Launched Resistor Color Code Calculator: decode 4-band, 5-band, and 6-band resistors with tolerance, temperature coefficient, and E-series lookup
- Launched Speaker Frequency Sweep & Resonance Tester: sweep 20 Hz to 20 kHz to find resonances, rattle points, and frequency drop-offs
- Launched Web MIDI Keyboard & Latency Tester: test MIDI keyboards for dead keys, ghost notes, and USB-to-browser latency without a DAW
- Fixed polling rate readings in Input Lag & Mouse Polling Rate Tester that were skewed by browser timestamp quantization
2026-04-23
- Launched File Hash Verifier: compute SHA-256, SHA-512, SHA-1, and MD5 checksums for any file and compare against a published checksum
- Launched EXIF & Image Metadata Scrubber: strip GPS coordinates, timestamps, and device data from images locally
2026-04-22
- Launched Webcam Lighting & Framing Analyzer: check lighting balance, face framing, and resolution diagnostics without uploading anything
- Launched Microphone Quality, Noise & Latency Tester: measure noise floor, clipping, frequency response, and round-trip latency locally
2026-04-21
- Dead Pixel & Flicker Test Suite now lets you toggle cursor visibility with the Space key during color fill tests, and pixel markers automatically use black or white for maximum contrast against each background
- Improved keyboard navigation and screen reader accessibility across Dead Pixel & Flicker Test Suite
2026-04-20
- Dead Pixel & Flicker Test Suite received a redesigned test launcher with cleaner controls and a focused instrument-panel layout
2026-04-15
- Launched Dead Pixel & Flicker Test Suite: run dead pixel, backlight bleed, and motion ghosting tests in fullscreen, fully client-side
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