Siliph vs Sejda PDF:
No Daily Limits, Built-in AI
Sejda is a capable PDF editor, but its free tier caps you at 3 tasks per day and 50MB per file. Compare how Siliph removes those limits and adds AI-powered document intelligence.
Unlimited Free Tasks
Sejda restricts free users to 3 tasks per day. Siliph has no daily task limits — compress, merge, split, and edit as many PDFs as you need, whenever you need.
100% Browser-Based
Sejda pushes its desktop app for offline work. Siliph runs entirely in your browser — no installs, no updates, works on Chromebooks, tablets, and locked-down work machines.
AI Document Assistant
Siliph includes a built-in AI copilot that summarizes, answers questions, and extracts data from your PDFs. Sejda has no AI assistant — you read every page manually.
Siliph vs Sejda Feature Comparison
Comparing free-tier capabilities and user experience
| Feature | Siliph (Free) | Sejda (Free) |
|---|---|---|
| Daily Task Limit | Unlimited | 3 tasks/day |
| Max File Size (Free) | 50 MB | 50 MB |
| Desktop App Required? | No — browser only | Optional (for unlimited) |
| AI Document Assistant | Yes (built-in) | Not available |
| Ad-Free Experience | 100% ad-free | Ads on free tier |
| OCR (Make Searchable) | Free | Free (counts toward 3/day) |
| Split by Bookmarks/Text/Size | All included | Basic split only |
| Exam Photo Resizer (SSC/IBPS/UPSC) | Presets built-in | Not available |
| Privacy (Local Processing) | Core tools run locally | Cloud processing |
| Registration Required | No account needed | Required for some features |
Why daily limits kill productivity
You're finishing a grant application at 11 PM. You need to merge your CV, compress a transcript, and OCR a recommendation letter. On Sejda's free tier, you hit the 3-task limit after the merge. You either wait 24 hours, install their desktop app, or pay.
Siliph removes that friction entirely. No daily counters, no forced installs, no upgrade prompts mid-workflow. Whether you process 3 PDFs or 300, the experience is identical — fast, private, and free.
AI that actually reads your PDFs
Traditional PDF tools are format manipulators — they move pages, compress bytes, convert formats. But they don't understand what's inside.
Siliph's AI Document Assistant changes that. Upload a 50-page contract and ask: "What are the termination clauses?" Or drop in a research paper and request: "Summarize the methodology and key findings." The AI answers with page references so you can verify instantly. Sejda offers none of this.
Built for the browser, not the desktop
Sejda's web version feels like a demo for their desktop product. Siliph is browser-native by design: core tools like merge, split, rotate, and compress run locally via WebAssembly — your files never leave your machine. For tools requiring server processing (OCR, AI, format conversion), we use encrypted uploads with 2-hour auto-deletion. No desktop app to maintain, no compatibility issues, no IT approval needed.
Stop counting tasks. Start finishing work.
Unlimited free PDF tools, AI document chat, exam presets, and zero ads. No desktop app required.