Effective compression
PDF to PDF/A removes redundant data and optimizes images to cut file size quickly.
PDF to PDF/A
Convert to archival PDF/A format.
Processed on server — auto-deleted within 1 hour
Processed on server — auto-deleted within 1 hour
Drop files here or click to browse
Max 50 MB total per batch
Server files are auto-deleted within 1 hour. Limit: 5 jobs per IP per day.
Free online PDF to PDF/A — fast, secure, and quality-focused. PDF900 makes document work simple.
- 100% free, no signup
- Privacy-first design
- Works in your browser
Everything you need from PDF to PDF/A
PDF to PDF/A reduces file size and fixes common PDF issues — ideal for email attachments, uploads, and storage.
Large PDFs slow down sharing and hit attachment limits. PDF to PDF/A shrinks files while keeping content readable, so you can send documents without frustration.
PDF900 prioritizes security: server-side tools delete uploads automatically within one hour.
Why use this tool
Readable output
We balance size reduction with legible text and clear visuals.
Secure processing
Files are transferred over HTTPS and deleted after processing.
How to use PDF to PDF/A
- 1
Upload your PDF to PDF to PDF/A.
- 2
Choose compression or repair options if available.
- 3
Start processing — usually done in seconds.
- 4
Download the optimized file and share it right away.
Everything included
Email-ready files
Smaller PDFs fit attachment limits more easily.
Free to use
PDF to PDF/A is free on PDF900 — no trial wall.
Auto-deletion
Server uploads are removed within one hour.
Cross-platform
Works in Chrome, Safari, Firefox, and Edge.
Frequently asked questions
- How does PDF to PDF/A work?
- We analyze the PDF, optimize images and streams, and return a smaller file.
- Will quality drop?
- Compression aims to preserve readable text and acceptable image quality.
- Is it safe?
- Yes — HTTPS encryption and automatic file deletion protect your documents.