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Support & Go Ad-Free

Keep SwiftLemon 100% Free & Remove All Ads

Every utility runs locally in your browser with zero server uploads. Support our development to unlock instant Ad-Free mode:

☕ Unlock Lifetime Ad-Free Pro ($10)
Cloud Sync & Local Cache Backup

All Browser Utilities

Every tool executes 100% locally on your device. Select a utility below to launch it immediately.

Images100% Client-Side

Privacy Image Converter & Compressor

Convert and compress images directly inside your browser. Support for WebP, JPEG, PNG, and AVIF with zero file uploads.

  • Multi-image drag and drop batch processing
  • Format conversion: WebP, JPEG, PNG, AVIF
  • Custom quality control and image scaling
Open Image Converter
DesignInstant Export

CSS & SVG Visual Background Generator

Design modern mesh gradients, layered SVG waves, and frosted glassmorphism cards. Copy CSS, Tailwind, or export SVG and PNG.

  • Multi-stop fluid Mesh Gradient creator
  • Customizable layered SVG waves with curvature controls
  • Glassmorphism styler with blur and border opacity sliders
Open Background Studio
DeveloperAuto-Repair

Smart JSON Formatter & Diff Checker

Format, beautify, minify, sort, and auto-repair broken JSON. Compare two JSON or text payloads side-by-side with line diffing.

  • Auto-fixes trailing commas, single quotes, and unquoted keys
  • Beautify (2-space, 4-space), minify, and recursive key sorting
  • Side-by-side visual diff checker with additions and removals
Open JSON Formatter & Diff
SEO & SocialPixel-Perfect

OpenGraph & Social Card Live Previewer

Preview exact social cards across Google Search, X (Twitter), Facebook, LinkedIn, and Discord before publishing. Copy meta tags in 1 click.

  • Live Google Search SERP preview (Desktop & Mobile)
  • X / Twitter Large Summary Card simulation
  • Facebook and LinkedIn post card rendering
Open OpenGraph Previewer
FinanceMulti-Gateway

Freelance & Payment Fee Calculator

Calculate payment processor fees and discover exactly how much to invoice clients to receive your desired take-home payout.

  • Dual modes: Calculate Net Payout vs Calculate Required Invoice Amount
  • Side-by-side gateway comparison: Stripe, PayPal, Wise, and Custom Rates
  • Reverse fee formula: (Net + FixedFee) / (1 - Rate) for exact take-home target
Open Fee Calculator