What is a JSON viewer online?

A JSON viewer online is a free browser-based tool that takes raw JSON text and displays it as a readable, collapsible tree view with syntax highlighting and colour-coded keys, strings, numbers and booleans. jsonparse.in provides a JSON viewer with tree view online, plus formatting, validation, lint checking and minification — all in one place with no login required.

How do I format and beautify JSON online?

Paste your JSON into the Input JSON box at jsonparse.in and click Format. The JSON formatter will instantly indent and beautify the JSON with proper spacing. The JSON beautifier also validates the JSON and highlights any parse errors in real time.

What is JSON lint and how do I check JSON online?

JSON lint is the process of validating JSON for syntax errors. At jsonparse.in, paste your JSON and the JSON lint tool instantly shows a Valid or Invalid badge. If there are errors, the JSON format checker highlights exactly where the problem is in the output panel.

How do I compare two text files online?

Use the Text Compare tool at jsonparse.in. Paste text in both panels and click Find Differences. You get a side-by-side diff with line-by-line and word-level highlighting — green for added lines, red for removed. It is a free online text difference checker with no file size limit for pasted text.

Can I compare two JSON files online?

Yes. Use the File Compare tool on jsonparse.in to upload two JSON files and see a side-by-side diff. This JSON file diff checker online supports .json, .txt, .csv, .js, .py and 40+ text-based file formats up to 5 MB each.

What compression algorithms are supported?

jsonparse.in supports four algorithms: Minify (removes whitespace from JSON, CSS, JS, HTML), RLE (Run-Length Encoding — best for repetitive data), LZ77 (Lempel-Ziv 77 — general purpose compression), and Huffman encoding (frequency-based optimal prefix encoding). All run entirely in your browser. Max file size is 50 MB.

How do I minify JSON online?

Open the JSON Viewer at jsonparse.in, paste your JSON, and click the Minify button. The JSON minifier online removes all whitespace and line breaks, compressing the JSON to its smallest possible size. You can then click Copy to copy the minified output.

Is jsonparse.in completely free?

Yes. All tools on jsonparse.in — JSON viewer, JSON formatter, JSON beautifier, JSON parser, text diff, file compare, and file compressor — are 100% free. No account, no login, no subscription. Your data never leaves your browser.

JSON Viewer Online – Free JSON Formatter, Beautifier & Parser

jsonparse.in is a free online JSON viewer with tree view and syntax highlighting. Format, beautify, parse, validate, lint and minify JSON instantly in your browser — no login, no install, no data sent to any server.

JSON Viewer Online — JSON Formatter, Beautifier & Parser

The JSON viewer online at jsonparse.in lets you paste any raw JSON and instantly see a collapsible, colour-coded tree view. It works as a JSON formatter, JSON beautifier, JSON parser online, JSON lint online tool, and JSON pretty print online tool — all in one. No account required.

JSON formatter — indent and format JSON with one click
JSON beautifier and validator — beautify and validate simultaneously
JSON parser online — parse any JSON string and inspect its structure
JSON viewer with tree view online — collapsible nodes, depth-first navigation
JSON pretty print online with syntax highlighting (keys, strings, numbers, booleans)
JSON lint online / JSON format checker — pinpoints exact syntax errors
JSON minifier online — strip whitespace to compress JSON
JSON compressor online — reduce file size for transfer
JSON viewer formatter online free — always 100% free

Open JSON Viewer Online →

Text Compare Online — Free Online Text Difference Checker

The text compare online tool lets you compare two text files side by side with word-level diff highlighting. It is a fast, free online diff checker and text diff tool online — paste text in both panels, click Compare, and immediately see every added line in green and every removed line in red.

Compare two text files online with side-by-side view
Online diff checker — line-by-line comparison
Text diff tool online — word-level change highlighting
Free online text difference checker with no file size limit
Online tool to compare text differences — supports ignore case and whitespace
Compare two JSON files online — paste JSON in both panels

Open Text Compare Online →

File Compare Online — Side by Side File Diff Checker

The file compare online tool lets you upload two files and see a detailed side by side file compare online diff. It works as a JSON file diff checker online, code diff tool, and general compare two files online utility. Upload files up to 5 MB in .json, .txt, .csv, .js, .py, .html, .css and 40+ other formats.

File compare online — drag and drop two files
Side by side file compare online with word-level diff
Compare two files online — 40+ supported formats
File diff online with line numbers
JSON file diff checker online — compare two JSON files

Open File Compare Online →

File Compressor — Huffman, LZ77 & RLE Compression Online

Compress any file in your browser using four algorithms. Supports Huffman encoding online, LZ77 compression online, RLE compression online tool, and Minify for code files. This JSON compressor online and JSON minifier online runs entirely in your browser — your file never leaves your device.

Huffman encoding online — frequency-based optimal compression
LZ77 compression online — general-purpose dictionary compression
RLE compression online tool — best for repetitive data
JSON minifier online — strip whitespace from JSON
JSON compressor online — reduce JSON file size

Open File Compressor →