Why compress a PDF?
Large PDFs get rejected by email clients (Gmail blocks files over 25MB), fail to upload to job application portals, slow down document sharing, and take up unnecessary storage. Compressing removes redundant data and optimizes embedded images without visibly degrading the document.
How to compress a PDF free online
- Go to ihatepdf.cv/compress-pdf
- Upload your PDF — drag and drop or click to browse
- Choose your compression level: Light, Medium, or Heavy
- Click Compress and download the smaller PDF — no watermark
Which compression level should I use?
- Light (20–30% reduction) — for documents where image quality matters, like portfolios, design work, or presentations you'll print professionally
- Medium (40–50% reduction) — for general business documents, reports, and CVs. The quality difference is barely noticeable on screen
- Heavy (60–70% reduction) — for archiving, internal records, or when you need the smallest possible file size and image sharpness is not a priority
How much can a PDF actually be compressed?
It depends almost entirely on content type:
- Scanned documents — highest compression (50–70%). Scans are essentially large images, and images compress extremely well
- Presentation PDFs with photos — 40–60% reduction typical
- CVs and text-heavy documents — 10–30% reduction. Text is already efficient to store
- Digitally created PDFs — 15–40% depending on embedded fonts and graphics
A 10MB scanned document typically becomes 2–4MB on Heavy compression. A 500KB text-only CV might only compress to 400KB.
Will compression affect text quality?
No — text in a PDF is stored as vector data, not pixels, so it remains perfectly sharp at any compression level. Only raster images (photos, scans, illustrations) are affected by compression. Even on Heavy mode, text looks identical to the original.
Compress a PDF to under 1MB for email
Most email clients allow attachments up to 10–25MB, but many HR portals and government forms limit uploads to 1–2MB. If your PDF is still too large after Heavy compression, try splitting it into sections and sending separately, or remove any high-resolution images before converting.
Frequently asked questions
Will compression make my PDF blurry?
Text remains lossless in all modes — it is never degraded. Only images are compressed. Use Light mode to keep image quality high while still reducing file size.
Is there a file size limit?
No server limit. The constraint is your device memory — typically up to 150MB on desktop browsers.
Can I compress a PDF that already has a password on it?
You need to remove the password first, then compress, then re-encrypt if needed.