About Us

Why this site exists

Developers paste API responses, JWTs, and log dumps into online tools all day. Many of those tools send the payload to a server. InTab is built so you can format JSON, compare documents, decode tokens, and convert encodings without that trade-off. Open the Network tab, use a tool, and you should see no request that carries your input.

What you will find

The landing page is a JSON formatter, JSON beautifier, JSON viewer, and JSON validator — because that is the job most people came to do. Related utilities live on their own URLs so search engines and bookmarks can land on the right page:

• JSON Formatter & Repair — Format, minify, and validate JSON — and auto-repair escaped JSON pasted from logs.
• JSON Diff & Compare — Compare two JSON documents semantically, repair broken input, and export a JSON Patch.
• Delimiter Tool — Turn lines into a delimited list with dedupe, trimming, and quote options.
• Base64 Encode & Decode — Encode and decode Base64 for UTF-8 text and images (PNG, JPEG, WebP, GIF, SVG), with data URLs.
• URL Encode & Decode — Percent-encode query values or a full URI, with optional + for spaces.
• JWT Decoder — Inspect a JWT header and payload in the browser. Decode only — signatures are never verified.
• cURL Builder — Parse a curl command into method, URL, headers, and body, then copy a rebuilt command. Nothing is sent.
• Unix Timestamp Converter — Convert epoch seconds or milliseconds to UTC, local time, and ISO 8601.
• UTC Converter — Convert local time to UTC and UTC to a chosen timezone, with ISO 8601, offset, and Unix epoch.
• UUID Generator — Generate RFC 4122 UUID v4 values, with or without hyphens, and inspect a pasted UUID.
• YAML ↔ JSON — Convert YAML to JSON and JSON to YAML entirely in the browser.
• Regex Tester — Test a JavaScript regular expression against text, with flags, matches, and capture groups.
• Hash Generator — SHA-1, SHA-256, SHA-384, and SHA-512 checksums of text or a local file, via Web Crypto.
• XML Formatter & Validator — Format, validate, and minify XML while preserving attributes, comments, and element order.
• SQL Formatter — Beautify SQL with dialect-aware formatting, keyword casing, and configurable indentation.
• CSV ↔ JSON Converter — Convert CSV, TSV, and delimited rows to JSON — or JSON arrays back to safe CSV.
• HTML Formatter & Minifier — Beautify HTML with Prettier or safely minify markup entirely in your browser.
• HTML Encode & Decode — Encode and decode HTML named and numeric entities without interpreting markup.
• CSS Formatter & Minifier — Beautify CSS with Prettier or minify stylesheets entirely in the browser.
• JavaScript Formatter — Beautify JavaScript with Prettier, or compact a parsed script without a server round-trip.
• Cron Expression Explainer — Explain a Unix cron expression and list the next run times in your local timezone.
• Text Diff & Compare — Compare two texts by line, word, or character with additions and removals highlighted.

Browse the full list on All utilities.

How we work

There is no account, no upload API, and no analytics that inspect what you paste. Theme preference may be stored in local storage on your device. If a feature would require sending your data to our servers, it does not ship here.

Who it is for

Backend and frontend engineers, support teams, and anyone who needs to read a JSON file, build a comma-separated list, or inspect a token locally. The tools are free and require no signup.