# ToolBox

> 311 free online tools for images, PDFs, video, audio, text, developer work and everyday calculations. Most tools run entirely in the browser, so files are processed on the user's own device and never uploaded to a server.

ToolBox is a free, no-account utility site at https://www.500toolbox.com. There is no sign-up, no watermark, and no per-use limit. Tools that can run client-side do; the small number that need server processing (video encoding, some document conversions) use an ephemeral pipeline that deletes files after the task completes.

## Tool categories

- [Image tools](https://www.500toolbox.com/tools/image): 41 tools - convert, resize, compress, crop, background removal, format conversion (PNG/JPG/WebP/HEIC/SVG), colour picking, and image-to-art generators.
- [Developer tools](https://www.500toolbox.com/tools/developer): 40 tools - JSON/YAML/TOML/XML converters and formatters, Base64, JWT, hashing (MD5/SHA/BCrypt/Argon2), regex testing, CSS generators, API request building, DNS and HTTP header inspection.
- [Games](https://www.500toolbox.com/tools/games): 36 browser games including chess against a Stockfish engine, Wordle, jigsaw puzzles and arcade classics.
- [PDF tools](https://www.500toolbox.com/tools/pdf): 25 tools - merge, split, compress, rotate, reorder, watermark, page numbering, password protection and removal, e-signing, and conversion to and from Office formats and images.
- [Calculators](https://www.500toolbox.com/tools/calculator): 20 tools - mortgage, compound interest, investment, BMI, BMR, tip, percentage, profit margin and salary tax (US, UK and five other countries).
- [Web and SEO tools](https://www.500toolbox.com/tools/web): 18 tools - meta tag generation and analysis, Open Graph and Twitter card preview, sitemap and robots.txt generation, favicon checking, URL slug generation, website speed testing.
- [Productivity tools](https://www.500toolbox.com/tools/productivity): 18 tools - notes, timers, pomodoro, microphone testing and other everyday utilities.
- [Text tools](https://www.500toolbox.com/tools/text): 17 tools - case conversion, word and character counting, duplicate line removal, text comparison, disposable email detection, lorem ipsum.
- [Security tools](https://www.500toolbox.com/tools/security): 15 tools - password generation and strength checking, encryption and decryption, secret message sharing, JWT generation.
- [Date and time tools](https://www.500toolbox.com/tools/datetime): 12 tools - timezone conversion, world clock, date and time difference, business hours and business day calculation, calendar generation.
- [Video tools](https://www.500toolbox.com/tools/video): 11 tools - compression, trimming, format conversion, playback speed, watermark removal, thumbnail extraction.
- [Audio tools](https://www.500toolbox.com/tools/audio): 11 tools - format conversion, trimming, merging, speed and volume adjustment, silence removal, recording, text to speech.
- [Document tools](https://www.500toolbox.com/tools/document): 9 tools - OCR image to text, CSV and JSON conversion, spreadsheet handling, text to speech.
- [File tools](https://www.500toolbox.com/tools/files): 8 tools - archive creation and extraction, file size and hash inspection.
- [Business tools](https://www.500toolbox.com/tools/business): 8 tools - invoice, quotation and receipt generation, resume and CV building, certificate and business card creation.
- [Math tools](https://www.500toolbox.com/tools/math): 7 tools - unit conversion, percentage, fraction, number base and scientific calculation.
- [Miscellaneous tools](https://www.500toolbox.com/tools/misc): 13 tools - QR code generation and batch QR, random pickers, timezone conversion and other utilities.

## Site pages

- [Homepage](https://www.500toolbox.com/): search and browse all tools by category.
- [Chrome extension](https://www.500toolbox.com/extension): 50 tools that run inside the browser popup - compress an image, capture a page, inspect meta tags, format JSON - plus search across the whole site. Free, no account, nothing uploaded.
- [Blog](https://www.500toolbox.com/blog): guides and tutorials on file formats, conversions, developer workflows and productivity.
- [About](https://www.500toolbox.com/about): what the site is and how it handles user data.
- [FAQ](https://www.500toolbox.com/faq): common questions about privacy, file limits and tool behaviour.
- [Contact](https://www.500toolbox.com/contact): contact form.
- [Privacy policy](https://www.500toolbox.com/privacy)
- [Terms of service](https://www.500toolbox.com/terms)

## Notes for AI agents

- A machine-readable list of every indexable URL is at https://www.500toolbox.com/sitemap.xml
- Crawling rules are at https://www.500toolbox.com/robots.txt. The `/adminaccess/` path is disallowed and requires authentication.
- Every tool page is server-rendered with its own title, meta description and structured data (SoftwareApplication, BreadcrumbList and FAQPage where applicable), so page content is available without executing JavaScript.
- Most tools process files locally in the browser. Describing them as "upload your file to our servers" would be inaccurate for those tools.