| 01 | Image Compressor image → smaller image | Compress and convert JPEG, PNG, WebP, GIF, and BMP images in your browser, and export to WebP, JPEG, PNG, or AVIF. AVIF is output-only and needs browser support. Images stay on your device. | image → smaller image | local |
| 02 | SHA-256 Hash Generator file → hex | Generate SHA-256, SHA-1, or MD5 hashes for text and files. Verify file integrity without uploading anything. Your files stay on your device. | file → hex | local |
| 03 | JWT Decoder Online token → claims | Decode JWT tokens and optionally verify HS256/384/512 or RS/ES signatures in your browser. Nothing is uploaded. | token → claims | local |
| 04 | AES-256-GCM Encryptor text → ciphertext | Encrypt text or files with AES-256-GCM in your browser. Nothing is uploaded, no account is needed, and the key stays on your device. | text → ciphertext | local |
| 05 | Base64/URL/Hex Encoder Decoder text → Base64/URL/hex | Base64/URL/Hex encoder and decoder. Zero-knowledge tool—runs locally in your browser. | text → Base64/URL/hex | local |
| 06 | JSON Formatter & Validator JSON → JSON | Format, validate, and minify JSON data with syntax highlighting. RFC 8259 compliant parser. Processing happens locally in your browser. | JSON → JSON | local |
| 07 | Text Diff Tool 2 texts → diff | Compare two texts and highlight differences. Line-by-line and character-level diff. Useful for code review and document comparison. | 2 texts → diff | local |
| 08 | QR Code Tool text → PNG | Make QR codes that actually stay private. Your WiFi password, contact info—none of it leaves your browser. | text → PNG | local |
| 09 | UUID Generator version → UUID | Generate cryptographically secure UUIDs (v1, v4, v7) or ULIDs in your browser. Zero-knowledge, client-side only. | version → UUID | local |
| 10 | Unix Timestamp Converter epoch → ISO 8601 | Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds precision. ISO 8601 compliant output. | epoch → ISO 8601 | local |
| 11 | Secure Password Generator rules → secret | Generate cryptographically secure passwords in your browser. Client-side using Web Crypto API. Your passwords stay on your device. | rules → secret | local |
| 12 | Regex Tester pattern → matches | Test regular expressions live in your browser. See every match with groups and indices, with support for common flags. Zero-knowledge, client-side only. | pattern → matches | local |
| 13 | Markdown Preview Markdown → HTML/PDF | Live Markdown preview with a lightweight renderer: headings, emphasis, code, tables, and task lists. Not a complete CommonMark or GFM implementation. Processing client-side. | Markdown → HTML/PDF | local |
| 14 | CSV ↔ JSON Converter CSV → JSON/CSV | Convert CSV to JSON and back with quoted-field support, delimiter detection, and live preview. Everything runs in your browser. | CSV → JSON/CSV | local |
| 15 | HMAC Calculator key + message → hex | Calculate HMAC signatures using SHA-256, SHA-1, or MD5 entirely in your browser. Zero-knowledge architecture, no key transmission. | key + message → hex | local |
| 16 | Cron Expression Builder & Next-Run Calculator expression → next runs | Validate five-field cron expressions and preview the next run times in local and UTC time. Everything runs in your browser — no schedules are sent anywhere. | expression → next runs | local |
| 17 | Color Converter & Contrast Checker hex → contrast | Convert colors between HEX, RGB, and HSL, and check WCAG contrast ratios for accessible text. All conversion happens in your browser. | hex → contrast | local |
| 18 | Text Analyzer text → counts | Analyze text with detailed character, word, and line statistics. Supports Unicode counting and whitespace analysis. | text → counts | local |
| 19 | CSS Minifier & Formatter CSS → minified CSS | Minify or beautify CSS in your browser. Comments, whitespace, and license blocks are handled safely. Nothing is uploaded. | CSS → minified CSS | local |
| 20 | Certificate Decoder: Inspect X.509 Certificates Locally PEM → fields | Parse PEM certificates and certificate chains in your browser: inspect subject, issuer, validity, public key and fingerprints, and verify signatures against a pasted trust anchor. Certificates never leave your device. | PEM → fields | local |
| 21 | RSA Key Pair Generator bits → PEM | Generate RSA-OAEP key pairs in your browser or import an existing SPKI/PKCS#8 pair, then export both as PEM. Keys never leave your device. | bits → PEM | local |
| 22 | PNG to WebP Converter PNG → WebP | Convert PNG images to WebP in your browser. Transparency is kept and nothing is uploaded. | PNG → WebP | local |
| 23 | JPG to WebP Converter JPG → WebP | Shrink JPG photos as WebP files without uploading anything. Batch several images at once. | JPG → WebP | local |
| 24 | WebP to JPG Converter WebP → JPG | Turn WebP files into JPG images that open everywhere. Wide app compatibility, local conversion. | WebP → JPG | local |
| 25 | WebP to PNG Converter WebP → PNG | Convert WebP to PNG when you need lossless output. Transparent areas survive the conversion. | WebP → PNG | local |
| 26 | GIF to WebP Converter GIF → WebP | Convert GIF images to WebP in your browser. Transparency survives the conversion. | GIF → WebP | local |
| 27 | BMP to WebP Converter BMP → WebP | Shrink uncompressed BMP bitmaps into WebP without uploading anything. | BMP → WebP | local |