Do I need an account?
No. The current tools do not require accounts, signups, payments, or cloud history.
All tools
Browse every local-first tool. Filter by category or search by name; the useful content remains indexable.
8 tools
Code, data, and encoding
Format payloads, decode tokens, and handle everyday developer text formats.
JSON Formatter/Validator
Format, minify, and validate JSON with calm parse errors and copy-ready output.
CSV to JSON Converter
Convert CSV into structured JSON with delimiter detection, header rows, and pretty output.
URL Encoder/Decoder + Query Parser
Encode URL components, decode percent-encoded text, and parse query parameters.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to UTF-8 safely in your browser.
JWT Decoder & Encoder
Decode JWT headers and payloads, inspect claims, or encode unsigned and HMAC-signed JWTs locally in your browser.
Random String & Password Generator
Generate random strings, passwords, API-style tokens, hex values, and Base64URL-safe strings locally with Web Crypto.
Text Diff Checker
Compare text, code, config, or JSON snippets locally and highlight additions, removals, and unchanged content.
Text to Binary Converter
Encode UTF-8 text to binary bytes or decode binary back to text locally in your browser.
2 tools
Dates and calculators
Count calendar days, calculate weekdays, adjust dates, and inspect Unix time values.
4 tools
Images and PDFs
Compress, convert, encode, merge, split, and export local files without uploading them.
Image Compressor & Resizer
Compress JPG, PNG, and WebP images, resize dimensions, or target a smaller file size locally.
JPG to PDF & PDF to JPG Converter
Convert JPG, PNG, and WebP images into a PDF, or export selected PDF pages as JPG images locally in your browser.
PDF Page Organizer
Merge PDFs, extract page ranges, remove pages, reorder pages, and rotate pages locally in your browser.
Image to Base64 Converter
Convert PNG, JPG, WebP, GIF, or SVG images into Base64 data URLs locally in your browser.
2 tools
Marketing links and QR
Build campaign URLs and create shareable QR codes for links, events, and printed material.
2 tools
Text and writing
Clean pasted text, convert case, count copy length, and estimate reading time.
Developer, calculator, marketing, and writing tools
WebMultitool groups utilities into practical buckets. Developer tools cover JSON, CSV, URLs, Base64, images, and binary text. Calculator tools handle date math and timestamp checks. Marketing tools help build campaign links and QR codes. Writing tools count words, characters, and reading time.
Each tool has an indexable page with examples, FAQs, related tools, and clear privacy notes. For background workflows, browse the guides.
Is my tool input uploaded?
No. Tools run client-side in your browser unless a future tool clearly states otherwise.
Can I use these tools on mobile?
Yes. The layout is mobile-first, and primary controls are sized for touch.