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Up to 20 files, max 100MB each
PDF compression reduces file size by downsampling embedded images and removing redundant data, while keeping text, fonts, and vector graphics untouched. Filator's free PDF compressor offers 4 compression levels (Smart, Low, Medium, High) with up to 80% file size reduction, batch processing of 20 files at once, and no signup or daily limits.
The top PDF compressors — iLovePDF (217 million monthly visits), Adobe Acrobat Online (handles up to 2GB), and Smallpdf (ISO 27001 certified) — all restrict free usage. iLovePDF limits free users to 2 files. Smallpdf caps free usage with hourly limits. Adobe requires sign-in for repeated use. Filator has none of these restrictions: 20 files, 100MB each, unlimited uses, zero signup.
| Level | Reduction | Best for |
|---|---|---|
| Smart (Default) | Auto | Most files — auto-detects optimal settings per document |
| Low | 10-20% | Professional documents, printing — minimal quality change |
| Medium | 30-50% | Email attachments, web uploads — balanced quality and size |
| High | 50-80% | Compress PDF to 1MB — maximum reduction, some image quality trade-off |
Here's the thing: if your goal is to compress a PDF to 1MB or 2MB specifically, start with High compression. Check the result. If it's still too large, the file probably has a lot of high-resolution images — consider splitting it first with our Split PDF tool, then compress the parts separately.
| Feature | Filator | iLovePDF | Smallpdf | Adobe |
|---|---|---|---|---|
| Max File Size | 100MB/file | 200MB total | Varies | 2GB |
| Batch Processing | 20 files | 2 files (free) | 1 file (free) | 1 file |
| Compression Levels | 4 (incl. Smart) | 3 | 2 | 3 |
| Daily Limit | Unlimited | 2 tasks/day (free) | Hourly cap | No limit |
| Signup Required | No | Optional | For unlimited | Optional |
| Max Reduction | Up to 80% | Up to 70% | Up to 60% | Up to 70% |
Most email providers cap attachments at 10-25MB. A 15MB report? Medium compression cuts it to 7-10MB. Need it under 1MB? Go High.
Job applications, government forms, and university portals often require PDFs under 1MB or 2MB. Compress to hit the limit exactly.
Batch compress old invoices, contracts, and archived documents. Upload 20 at once and shrink your storage footprint.
Smaller PDFs load faster on websites and use less cloud storage bandwidth. Medium compression is usually enough here.
Not all PDFs shrink the same way. The compression ratio depends entirely on what's inside the file:
Your PDF is uploaded over encrypted HTTPS to our server for compression. The engine analyzes the document structure, downsamples high-resolution images based on your chosen compression level, removes duplicate embedded resources, and optimizes internal data structures. Text and vector graphics stay untouched — only raster images get compressed. After download, files are automatically deleted from our servers.
Compressing a PDF to 200KB is possible but depends on the original file. Text-heavy PDFs (contracts, articles) are often already under 200KB. Image-heavy PDFs need aggressive compression. Here's the approach:
Reality check: A 10MB PDF with 20 high-res photos won't compress to 200KB without visible quality loss. If you need to hit 200KB specifically, start by removing unnecessary pages rather than pushing compression to extremes.
Adobe Acrobat Pro ($19.99/month) includes PDF compression as one of many features — but if compression is all you need, there's no reason to pay. Filator uses Ghostscript (the same open-source engine used in many professional PDF tools) for server-side compression. The result is comparable to Adobe's output. Open any browser, upload your PDF, pick a compression level, and download — no Adobe subscription, no software install, no account.
Upload your PDF and select High compression (50-80% reduction). For most documents under 5MB, this brings the file below 1MB. Check the after-compression stats — if it's still over 1MB, the file likely has many high-res images. Try splitting it first, then compressing the parts.
Yes. Use Low compression (10-20% reduction) or Smart mode, which auto-detects optimal settings. Text and fonts aren't affected by any compression level — only images get downsampled. For mostly-text documents, even High compression won't noticeably change quality.
Yes. Compress up to 20 PDFs at once, each up to 100MB, with all 4 compression levels. No signup, no watermarks, no daily limits. The tool is funded by Filator's premium AI tools.
Yes. Upload up to 20 files simultaneously. They process in batches of 3 for speed, and each file shows individual compression stats. Download them one by one as they finish.
Smart mode analyzes each file individually and picks the best compression strategy. It balances quality and size automatically. If you're not sure which level to use, start with Smart — it's the default for a reason.
PDFs that are mostly text or already compressed have little room to shrink. A 150KB text contract might drop to 140KB. That's normal. PDFs with lots of photos and scanned pages see the biggest gains (50-80% reduction).
Files upload over encrypted HTTPS for server-side compression. After you download the result, files are automatically deleted. No account or personal information is required, and no one at Filator accesses your documents.
No. Compression targets embedded images and removes redundant data. Fonts, text, vector graphics, and document structure remain identical. Your PDF will look the same — just smaller.
Use High compression (50-80% reduction). For files originally under 1MB with mostly text, this usually achieves 200KB. Image-heavy files may need splitting first — extract only the pages you need, then compress.
Open Filator in any browser, upload your PDF, choose a compression level, and click Compress. No Adobe Acrobat, no software download, no subscription. Filator uses Ghostscript — the same engine behind many professional PDF tools.
Yes. Filator works in any mobile browser — iPhone, Android, iPad. Upload your PDF, pick a level, and download the smaller file. No app needed.
Low compression has no visible impact on printing. Medium is fine for standard office printing. High may reduce image sharpness in photos, but text stays crisp at any level. For professional printing, use Low or Smart.
Bottom line: Filator's PDF compressor offers 4 compression levels with up to 80% file size reduction, batch processing of 20 files, and 100MB per file — all free with no signup. Competitors: iLovePDF limits free users to 2 files, Smallpdf has hourly caps, Adobe Acrobat Pro costs $19.99/month. For compressing PDFs to 1MB or 200KB for email attachments and form uploads, start with High compression. Text and fonts stay untouched — only images get downsampled.
Scroll up, drop your PDFs, and make them smaller. Four compression levels, 20 files at once, no signup. Need to hit a specific size like 1MB or 2MB? Start with High compression and check the stats. Need the file even smaller? Split it first, then compress the parts.