JSON Formatter & Validator

100% Client-Side • Zero Data Uploaded
Ad Views: 1
Input JSON (or raw data)
Formatted Output Ready
Ready to compare
Original (Before)
Modified (After)
Visual Comparison (+ Additions in Green, - Deletions in Red)
Click "Compare Diff" or "Load Sample Diff" to view line-by-line visual differences.
Input cURL Command
Generated JavaScript (fetch) Ready
Input SQL Query
Formatted SQL Keywords Capitalized
Markdown Input
Live HTML Render
Generate Realistic Mock Datasets
Generated Mock Data (JSON) 10 records
QR Code Content
Live QR Preview
Scan with any phone camera
Color Format Converter
Pick visual color or type below:
#38bdf8
WCAG 2.1 Accessibility Contrast Checker
Validates text readability on dark and light surfaces according to official web standards.
Against Dark Background (#07090e): 11.8 : 1
AA Normal ✓ AA Large ✓ AAA Enhanced ✓
Against White Background (#ffffff): 1.78 : 1
AA Normal ✕ AA Large ✕ AAA Enhanced ✕
Current Unix Epoch Time
1730673717
Convert Epoch to Human Date
Local Time: —
UTC (GMT): —
Relative: —
Convert Human Date to Epoch
Epoch (Seconds): —
Epoch (Milliseconds): —
Input String
Output
Explain Cron Expression
Meaning: Every 15 minutes
Upcoming Execution Timestamps:
Paste Encoded JSON Web Token
Header Algorithm & Type
Payload Claims
UUID v4 Generator
Text Hash Generator (SHA-256)
SHA-256: —
SHA-1: —
Regular Expression Sandbox
Test String
Match Results 0 matches
Quick Git Commands
Undo last commit, keep changes unstaged: git reset HEAD~1
Discard all local changes in working directory: git restore .
Delete a remote branch: git push origin --delete <branch>
Rename current branch: git branch -m <new_name>
Stash all changes including untracked files: git stash -u
Pretty one-line commit log tree: git log --graph --oneline --decorate --all
ESC to close

Keyboard Shortcuts

Open Command Palette ⌘K / Ctrl+K
Execute / Format Tool ⌘Enter / Ctrl+Enter
Show Shortcuts Guide ?
Close Active Modal Escape
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