Sejda vs ShrinkTo: 2026 Free PDF Tool Comparison

1. Quick verdict
2. Side-by-side
3. Privacy
4. Where Sejda wins
5. When ShrinkTo wins
6. When Sejda wins
7. Real tasks
8. Cost over 5 years
9. Recommendation
10. FAQ

Quick verdict (TL;DR)

Sejda is a power-user PDF tool with three flavors: Sejda Online (uploads files, free with limits), Sejda Desktop (paid app, local processing), and Sejda Mobile. It's known for clean editing capabilities — text editing, form filling, signing — that browser-only tools struggle to match.

Sejda's free online tier is generous compared to Smallpdf (3 hourly tasks vs Smallpdf's 2 daily), but it still uploads your files. Sejda Desktop is the most private option but costs $7-15/month.

For routine compress/merge/split work without paying or uploading: ShrinkTo. For deep PDF editing, form filling, advanced signing: Sejda Desktop.

Side-by-side comparison

Privacy: three different stories

Sejda has three products with distinct privacy postures:

• Sejda Online: Uploads your file to their servers. Files deleted after 5 hours per their policy. Browser-side rendering uses some local processing but server is the main worker.
• Sejda Desktop: Fully local processing. Files never leave your machine. The most private option but costs money.
• Sejda Mobile: Mix of local and cloud — depends on operation.

ShrinkTo is purely browser-based — no upload, no server, free. Same private architecture as Sejda Desktop but without the price tag, with the trade-off of fewer power-user editing features.

Where Sejda still wins

Sejda has features ShrinkTo doesn't:

• True PDF text editing: Click on text in a PDF, edit it inline. ShrinkTo doesn't offer this — browser libraries can't replace embedded fonts cleanly enough.
• Form field creation: Sejda lets you draw new form fields onto existing PDFs.
• Form filling with field detection: Auto-detects existing form fields and lets you fill them.
• Signing with stored signatures: Save a signature, reuse it across documents.
• Server-side OCR: Better accuracy than browser-based OCR for complex scans.
• Bookmark and outline editing: Manage PDF table-of-contents structures.
• Advanced page operations: Reorder, rotate, delete with visual interface.

When ShrinkTo is the better pick

• You hit Sejda free's 3 tasks/hour cap and don't want to pay $7.50/week
• Your task is routine compress/merge/split/convert/rotate
• The document is sensitive and you don't want to upload
• You're on a phone or tablet (Sejda Online works but ShrinkTo is more mobile-optimized)
• You need exact KB-target image compression for portals (Sejda doesn't offer this)
• You're on a Chromebook or any device where you can't install Sejda Desktop

When Sejda is clearly the better pick

• You need to edit text directly inside a PDF (not just add overlays)
• You're filling out PDF forms regularly
• You need to create new form fields on existing documents
• You're processing scanned forms and OCR accuracy matters
• You're working with bookmarks, outlines, or complex PDF structures
• You're a power user who can justify $63/year for the desktop app

Three real tasks

Task 1: Edit a typo in a PDF

Sejda wins. Open Sejda's editor, click the typo, type the correction. ShrinkTo can't do this — browser PDF editing libraries can't reliably replace text without disrupting embedded fonts.

Task 2: Compress 5 PDFs in 10 minutes

Sejda free: 3 tasks/hour cap means you can do 3, then wait. ShrinkTo: do all 5 in 30 seconds. ShrinkTo wins decisively.

Task 3: Fill out a job application PDF form

Sejda wins. Auto-detects form fields, type in each. ShrinkTo doesn't offer form filling.

Cost over 5 years

• Sejda Premium: $63/year × 5 = $315
• Sejda weekly pass: $7.50/wk × 52 wks × 5 years = $1,950 (most expensive)
• ShrinkTo + occasional Sejda free: $0

Pay for Sejda only if you specifically use its power-user features regularly. Otherwise the free combo covers daily PDF work.

My recommendation

Use ShrinkTo for daily routine PDF work — compress, merge, split, convert, rotate, watermark. Use Sejda for the occasional task that requires real PDF editing (text changes, form fields, OCR). If you only do power-user tasks once a month, you can use Sejda's 3-tasks/hour free tier without paying.

Frequently asked questions