Compress PDF to 1MB
Automatically finds the best quality that fits under 1MB. Your file never leaves your device — everything runs in the browser.
Drop your PDF here
or click to choose a file · up to hundreds of MB
Choose PDF fileWhere a 1MB limit shows up
Email attachments
Large attachments bounce depending on the recipient's mail server. Keeping each PDF under 1MB means multi-file emails always go through.
School & LMS submissions
University LMS and assignment portals commonly limit per-file size. Compress scanned homework under 1MB to avoid submission errors.
Cloud & document sharing
Lighter documents preview and sync faster on shared drives and collaboration tools. A PDF under 1MB opens smoothly anywhere.
How it works
- 1Select your PDF or drag & drop it.
- 2The target size is pre-set to 1MB — just hit the compress button.
- 3The tool searches for the best quality that fits under 1MB, then you download the result.
Frequently asked questions
Will the file really end up under 1MB?+
The tool steps image resolution down and keeps the best-looking result that fits under 1MB. If a document simply can't go that low (e.g. it's all text and fonts with nothing left to shrink), you get the smallest achievable file instead.
Is my file uploaded to a server?+
No. Compression runs entirely in your browser via WebAssembly — the file never leaves your device. Safe even for sensitive contracts and records.
Does compressing to 1MB hurt quality?+
1MB is a fairly comfortable target — most documents compress with little to no visible quality loss. Only very image-heavy files see mild resolution adjustments.
Which PDFs compress well to 1MB?+
Scans, photos, and graphics-heavy PDFs shrink the most. Already-optimized text PDFs have little left to remove, so the original may be returned unchanged.