| What it does | Client-side WebAssembly SDK for compressing images and PDFs in the browser before upload
| Free online PDF tools that run in your browser with no uploads or sign-up required
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| Stage | Not given
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| Founded | Not given
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| Based in | IN
| GB
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| Pricing model | Not given
| Free
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| Pricing | Developer Free: $0/forever with unlimited client-side WASM engine, zero-config, target KB file bisection, and default "Powered by 100KB" backlink. Commercial License: $19/month (or $149/year, save 35%) for 100% unbranded license, automated domain whitelist lock, and high-precision biometric passport
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| Key features | - Target KB bisection - compresses files to exact size caps (50KB, 100KB, 200KB)
- Vector-preserving PDF compression - shrinks PDF streams while preserving text and fonts
- ICAO biometric passport photo cropping - 70% head ratio for visa compliance
- AI background removal - neural network-based transparent PNG cutouts
- Signature contrast sharpening - cleans signatures under 20KB
- Parallel batch processing - processes 100+ files concurrently without UI freezing
- AWS S3 and Cloudflare R2 integration - 1-line wrapper for cloud storage uploads
- Format conversion - HEIC to JPG, PNG to JPG, JPG to PNG, image to PDF
- PDF manipulation - merge, split, convert PDF to Word
- Stamp and watermark removal - removes scanner artifacts and digital stamps
| - Merge PDFs
- Split and extract PDF pages
- Compress PDF with custom file size
- Convert between PDF and Word, Excel, PowerPoint
- Convert images to and from PDF
- Edit PDF text and add content
- Sign PDF with signature
- OCR scanned PDFs
- Protect PDF with password
- Rotate, reorder and delete pages
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| What makes it different | - 0ms cloud latency - all processing happens locally in browser RAM with no server involved
- Reduces AWS S3 bills by 85% - shrinks 15MB uploads to 100KB before upload
- Unified SDK replacing 5 open-source packages - single solution for PDF, image, and AI tools
- 18+ media and document engines included - comprehensive toolkit from compression to biometrics
| - Files processed entirely on your device, never uploaded to servers
- No account, sign-up or tracking required
- 31 tools in one place for all PDF jobs
- Works on any device with a modern browser
- No watermarks or daily limits
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 21 | 13 |
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| Referring domains (Majestic) | 28 | 1 |
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100KB Developer
PDF ProMaster