science

Experimental — limited browser support

Browser-only conversions for this format are inherently limited; output may be approximate.

archive

PDF to PDF/A

Best-effort PDF/A conversion for archiving

About this tool

Convert a PDF for long-term archiving. We add PDF/A-style metadata (title, producer, creation date) and ensure the structure is well-formed. Note: full PDF/A compliance requires color profile embedding, font outline conversion, and ISO standard validation — none of which are fully achievable in browser. For ISO-validated output, use Adobe Acrobat or veraPDF.

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Unlock PDF

Provide the password and we'll re-export the PDF without encryption. Cannot crack unknown passwords.

Tier C
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Redact PDF

Search-and-redact: enter text patterns and we cover matches with black bars and rasterize the output.

Tier C
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Repair PDF

Attempts to re-save the file or, as a fallback, render-and-rebuild via pdf.js. Browser repair is limited.

Tier C
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By Dakshesh · Web Engineer & SEO Specialist · Last updated 2026-05-09

Why use a pdf to pdfa tool?

ShrinkTo's tools run entirely in your browser using modern JavaScript libraries. That means your files never leave your device — no server uploads, no third-party cloud, no data retention. The processing is fast, the workflow is simple, and your privacy is preserved by design.

Common use cases

Quick local edits

Make small changes without installing software.

Privacy-first workflow

Sensitive documents stay on your device.

No-signup convenience

Use immediately — no account required.

Cross-platform

Same tool works on phone, tablet, laptop, desktop.

How to use this tool

  1. Upload your file. Drag-and-drop or click to browse.
  2. Configure options. Set the parameters you need.
  3. Run the tool. Processing happens in-browser.
  4. Download result. File ready to use.

Frequently asked questions

Are my files uploaded?
No. Everything runs in your browser locally.
Is this really free?
Yes — no signup, no watermarks, no caps.
Will it work on my phone?
Yes — any modern browser supports our tools.
What about file size limits?
Up to 50 MB per file. Browser memory is the practical ceiling.
How is privacy guaranteed?
Open your DevTools Network tab during use — you'll see zero outbound data.
verified
Privacy by design.

All processing happens in your browser using JavaScript libraries. Your files never reach any server. No accounts, no tracking, no data retention.