Your browser. Your workspace.
Small tools.
Better workflow.
A considered collection of tools for code, data and everyday files. Find what you need and get back to making things.
Most tools process input locally. API Tester sends requests to your chosen target. Privacy & storageTool categories
Browse by task
A place for every task. Choose a collection to get started.
JSON Tools Format, validate and diff JSON — or generate typed structs for 7 languages. 15 tools Images Convert, compress, resize and rasterise images without uploading them. 12 tools PDF Tools Merge, split and organise PDFs — or turn pages into JPG and PNG. 5 tools Audio & Video Convert, compress and inspect audio and video files locally. 7 tools Encode & Crypto Base64, hashes, HMAC, TOTP, certificates and other security utilities. 15 tools Formatters Beautify and minify JSON, SQL, XML, HTML and CSS. 7 tools Text Case conversion, text diffing and clean-up utilities. 6 tools Developer RegEx tester, UUID, cron, chmod, HTTP status and MIME reference. 13 tools CSV View, validate, merge, deduplicate and convert CSV files. 8 tools Printables Create lined, grid, music and checklist paper as printable PDFs. 1 tool
Popular Tools
A hand-picked starting point for everyday tasks.
JSON Formatter & Validator Pretty-print, minify and validate JSON with precise error locations. Featured Image Compressor Compress and resize PNG, JPG and WebP images — 100% in your browser. Featured QR Code Generator QR codes for links, Wi-Fi, vCard contacts, email, SMS and locations — with a centre logo and SVG export. Featured Base64 Encode / Decode UTF-8 safe Base64 with URL-safe variant support. Essential JWT Decoder Decode JWT header and payload, check expiry locally. Essential
BasaltKit
Know where your data goes
Local tools process inputs in your browser. API Tester sends requests directly to the URL you choose. Some tools download additional resources; load them online before use.
- No account required
- Free forever, every tool
- Offline support depends on loaded resources
- Batch processing built in
- Site analytics and advertising are disclosed in Privacy
- 89 tools across 10 categories