PDF Size Reducer

Free PDF Size Reducer

Reduce PDF size online for free. Choose 100KB, 200KB, 500KB, or 1MB. No account, no PDF upload.

Targets are not guaranteed. Compressed PDFs are image-based and do not retain selectable or searchable text, interactive forms, links or bookmarks. Review every page for detail and readability.

Target sizeNever uploaded

Choose the largest available target your destination allows. Targets use 1024-based units and are not guaranteed. Your upload form may use a smaller byte limit.

Choose the limit first

Set 100KB, 200KB, 500KB, or 1MB before adding a PDF.

Queue multiple PDFs

Drop up to 20 files and let the browser work through them in order.

Files stay on your device

Your PDFs are compressed locally instead of being uploaded.

See clear progress

Follow every file from loading through compression and download.

Know the real result

See whether the chosen target was reached before saving the file.

Download when ready

Save one result at a time or collect completed PDFs in a ZIP.

What is a PDF size reducer?

A PDF size reducer makes a PDF smaller so it can fit an upload limit, attach to an email, or move through a document portal. This PDF Size Reducer focuses on a number you already know: 100KB, 200KB, 500KB, or 1MB.

You pick the limit before adding the file. The tool then reduces page resolution and image quality using a fixed range of settings. If the target is too small for the document, you get the smallest reduced result it found, marked Target not reached. Inspect the download yourself to check readability.

For a 200KB upload cap, use the Compress PDF to 200KB page for verified use cases and guidance on what can fit.

Three short steps

How to reduce PDF size

No settings maze. Start with the file limit your destination gave you.

  1. Pick the target

    Choose 100KB, 200KB, 500KB, or 1MB. The selected size applies to the next PDF or group of PDFs you add.

  2. Add your PDF

    Click to choose one PDF, or drag and drop up to 20 PDFs. Each file can be up to 50 MB and 20 pages. Unlock password-protected PDFs before adding them.

  3. Download the result

    Watch the status, then download each finished file. When the queue is done, you can also download the completed PDFs as a ZIP.

How this PDF size reducer works

The browser reads the PDF and renders each page as an image. It tries lower page resolutions and JPEG quality levels, and builds a new PDF from the compressed pages. It stops when it finds a smaller PDF within your selected target. Otherwise, it tries all available settings and offers the smallest result that is smaller than the original. It does not check text readability.

This method works well for scans and image-heavy documents. It does not retain selectable text, interactive forms, links, bookmarks, or editable annotations. Treat the finished PDF as an image-based copy.

Target reached
The finished PDF is at or below your selected size.
Target not reached
The smallest reduced result is still above the target. Review its readability before using it.
Could not reduce
No result was smaller than the original within the quality limits.

Target Size Mode

When to use Target Size Mode

Target Size Mode is built for a hard file cap. Use it when the destination cares more about file size than editable PDF structure.

A good fit

  • Application and enrollment portals
  • Scanned IDs, certificates, receipts, and forms
  • Email attachments with a stated size limit
  • Image-based PDFs that only need to stay readable

Choose another approach

  • Resumes that need ATS parsing
  • Contracts and papers that need searchable text
  • PDFs with working forms, links, or annotations
  • Ebooks or documents that depend on bookmarks

Private PDF compression

This PDF Size Reducer runs inside your browser. It does not upload PDF contents, filenames, page images, or compression results to a server. No account is required.

Tasks and download links last for the current session. Refresh the page and they are cleared. The saved preferences are your last target-size choice and whether you have seen the one-time notice about image-based output.

This website also uses Google Analytics and Microsoft Clarity for usage analytics. PDF compression runs locally in your browser.

No PDF uploadNo accountLocal downloadsSession-only results

Common questions

PDF size reducer FAQ

Is this PDF size reducer free?

Yes. You can reduce PDF size in your browser without creating an account or paying for a plan.

Are my PDF files uploaded?

No. The PDF is read, compressed, and rebuilt on your device. The file contents, filename, page images, and finished PDF are not sent to a server.

Can I reduce a PDF to exactly 100KB or 200KB?

The tool aims for the selected limit, rather than an exact byte count. Our targets are 102,400 bytes (100KB), 204,800 bytes (200KB), 512,000 bytes (500KB), and 1,048,576 bytes (1MB). Target reached means the result is at or below our selected limit. Compare the downloaded file's actual byte size with your destination's requirement. Some PDFs remain above the target after all available settings have been tried.

Why does my result say Target not reached?

The tool found a PDF that is smaller than the original but still above your target. It gives you the smallest result from its available settings. If your destination permits a larger file, choose that target and try again. If the cap is fixed, a lower-resolution scan from the source may help, but keep every required page and detail. Check readability yourself; the tool does not inspect the text for you. Do not submit a file that exceeds the destination's limit.

Will reducing PDF size affect quality?

Yes, it can. This tool turns pages into images and reduces their resolution and JPEG quality to try to meet the target. Small text, photos, stamps and signatures may lose detail. Review every page; file size alone does not show whether the result is suitable.

Which PDF target size should I choose?

Use the largest size your destination permits. A 100KB cap leaves little room for detailed scans or several pages; 200KB, 500KB and 1MB allow more data. A larger target can retain more detail, but cannot guarantee quality. Check the destination's exact byte limit and required document features before compressing.

Will the reduced PDF keep searchable or selectable text?

No. Every compressed output is rebuilt from page images. It does not retain selectable or searchable text, interactive forms, links, bookmarks, or editable annotations. Use another method if you need ATS parsing or editable document features.

What are the PDF limits?

Each PDF can be up to 50 MB and 20 pages. You can choose one PDF with the file picker or drop up to 20 PDF files at a time.

Can I reduce multiple PDFs in one session?

Yes. Drop up to 20 PDFs, or keep adding files one at a time. The tool processes them in order, and each finished PDF can be downloaded as soon as it is ready.

Can this tool open a password-protected PDF?

No. Unlock the PDF first, save an unprotected copy, then add that copy to the tool.

Why is my PDF rejected even when the target is reached?

Target reached confirms this tool's size threshold only. Your destination may use a smaller byte limit, count all attachments together, or require searchable text or specific document features. Check its instructions and error message. See the 1MB guide for shared attachment limits.

Size guides

Choose a PDF size limit

Follow the limit given by your upload form. Each guide opens the tool with that target selected. The 500KB option is also available in the tool above.

Reduce your PDF now

Pick the limit your upload form requires, add the PDF, and download the result from this page.

Go to the PDF Size Reducer