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Compress PDF to an Exact Size — Free
Need your PDF under a specific size for email or uploads? Pick a target — under 1MB, 2MB, 5MB or any custom size — and PDFZippy automatically finds the best quality that fits. Everything runs in your browser; your file is never uploaded.
How to use compress pdf to an exact size
Open your PDF in the Compress to Size tool.
Choose your target: under 1MB, 2MB, 5MB, 10MB — or enter a custom size.
Click “Compress to Size” — the tool measures your file and picks the ideal quality automatically.
Download the result and check the before/after sizes.
Why use PDFZippy for this
Hit exact targets — under 1MB, 2MB, 5MB or any custom size
Automatic quality finder — no slider guessing
Text stays sharp; photos do the shrinking
Before/after sizes shown on every result
Free, no watermarks, no signup, no uploads
Tips for best results
Already under your target? The tool will tell you — no recompression needed.
Email limits are usually 25MB (Gmail) — pick 20MB to be safe.
Scanned PDFs shrink the most; text-only files are already small.
Keep a copy of the original if you need full quality later.
Frequently asked questions
How do I compress a PDF to exactly 1MB?
Open Compress to Size, choose “Under 1 MB” and click the button. The tool measures your file, calculates the ideal quality, and produces a PDF under 1MB automatically — no manual slider tweaking.
What if my PDF can't reach the target size?
The tool will tell you honestly and deliver the smallest readable result. This happens with text-heavy files that are already efficient, or when the target is extremely small for the page count.
Will my text stay readable?
Yes. The tool reduces image quality first and protects text sharpness. Pages remain fully readable at normal zoom.
Is there a file size limit?
Only your device's memory. Most phones handle files up to a few hundred MB.
Do I need to upload my file?
No — everything runs in your browser. Your PDF never leaves your device.
What's the difference from regular Compress PDF?
Compress PDF gives you a manual quality slider; Compress to Size takes a target (like “under 2MB”) and finds the right quality for you automatically.