Crop images in bulk with ratio locks, social media presets, manual previews, and folder-preserving ZIP downloads.

Compress and resize images in bulk with quality control, before/after preview, and ZIP download.

Normalize logos and product images to consistent sizes with background control, recoloring, and batch export.

Generate placeholder images with custom dimensions, text, colors, and batch output.

Create QR codes with predefined brand logos, decorative frames, custom colors, and PNG/SVG export.

Format, validate, explore, and diff JSON data with tree view and large file support.

Compare text or files side by side with highlighted differences.

Generate placeholder text in paragraphs, sentences, or words.

Write, import, preview, and export Markdown with synced scrolling.

Encode or decode URL components and full URLs.

Convert text and files to and from Base64.

Convert special characters to HTML entities and back.

Generate or decode HTTP Basic Authentication headers.

Decode and inspect JSON Web Token header, payload, and signature.

Convert between px, rem, em, vw, vh, pt, and more.

Convert colors between HEX, RGB, HSL, and preview them.

Test regular expressions with real-time matching and capture groups.

Comprehensive SEO optimization checklist for web projects.

Generate strong, secure random passwords with custom rules.

Compare meeting times across a clean World Clock city list, IANA zones, and Windows time zones with shareable UTC-based results.

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text.