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ToolSuite

Categories

Twelve families of tools. Each page lists everything in that category and explains what the tools are for.

PDF Tools70 tools

Everything you need to reshape a PDF: combine documents, pull pages out, rotate or crop, add page numbers and watermarks, read and strip metadata, and set or remove passwords. Most of these run inside your browser, so the file never leaves your device.

Open pdf tools

Image Tools143 tools

Convert between JPG, PNG, WebP, AVIF, BMP, GIF and ICO, resize or crop to an exact size or ratio, adjust colour, add watermarks, read EXIF data and build social-media-ready exports. Conversions use the browser canvas and codecs already on your device.

Open image tools

Text Tools95 tools

Word and character counters, case converters, line sorters, duplicate removers, find-and-replace, extractors for emails, URLs and numbers, plus encoders for Base64, hex, binary and Unicode. All of it is plain deterministic string processing in your browser.

Open text tools

Developer Tools98 tools

Formatters and minifiers for HTML, CSS, JavaScript and SQL, a regex tester, hash and UUID generators, JWT and URL parsers, cron helpers, and metadata generators for robots.txt, sitemaps and Open Graph tags. Built on the Web Crypto API and audited open-source parsers.

Open developer tools

JSON, XML & YAML Tools79 tools

Format, minify and validate JSON, XML, YAML, TOML, INI and .env files, convert between any pair of them, flatten or sort keys, compare two documents and extract values by path. Parsing happens locally with well-maintained MIT-licensed parsers.

Open data tools

CSV & Spreadsheet Tools50 tools

Convert between CSV, TSV, JSON, XML, Markdown tables and Excel, remove duplicate or blank rows, filter and sort columns, change delimiters and encodings, split large files and compare two datasets. CSV work is local; Excel binaries are handled server-side.

Open spreadsheet tools

Calculators46 tools

Worked calculators that show the formula and the substituted values, not just a number: coordinate geometry, triangles and circles, percentages, ratios, loans and interest, statistics, date differences, and unit conversion across length, mass, area, volume, speed and temperature.

Open calculators tools

File & Archive Tools31 tools

Create and extract ZIP, TAR and GZIP archives, list archive contents before extracting, generate SHA-256 and CRC32 checksums, detect real file types from magic bytes, view files as hex, and build bulk rename plans. Archive handling guards against zip-slip and decompression bombs.

Open files tools

Document Tools27 tools

Convert between DOCX, ODT, RTF, HTML, Markdown and plain text, pull out the text, links, images and headings from a Word file, read and clear document properties, and merge or split documents. Office format conversion runs on a sandboxed LibreOffice worker.

Open documents tools

Audio Tools46 tools

Convert between MP3, WAV, FLAC, AAC, OGG and M4A, trim or join clips, normalise loudness, change bitrate, sample rate or channel layout, and read technical metadata. Processing runs on isolated FFmpeg workers with per-job duration and size ceilings.

Open audio tools

Video Tools36 tools

Convert between MP4, WebM, MKV and MOV, compress or resize, trim and merge clips, change frame rate or speed, extract audio or still frames, build GIF previews and read codec details. Every job runs in a network-isolated FFmpeg worker with a hard timeout.

Open video tools

Browser & Utilities17 tools

Read your screen size, viewport, pixel ratio and user agent, test keyboard and pointer events, inspect files by drag and drop, and preview HTML, CSS, Markdown and SVG live. Nothing here is transmitted - the readings come from your own browser APIs.

Open browser tools