Best for
- Reducing large PDFs for email, upload forms, school portals, visa portals, and client review.
- Choosing a target size before compression starts.
- Making scanned or image-heavy PDF files easier to share.
Online Merge PDF Tool
Upload two or more PDF files, arrange them in the order you want, and download one combined PDF.
- Combine multiple PDFs: Upload two or more PDFs and join them into one organized document.
- Control file order: Reorder uploaded files before creating the final merged PDF.
- Fast browser workflow: Process and download the combined PDF from the same tool page.
This document is processed locally. Your file is not uploaded anywhere.
This document is processed locally. Your file is not uploaded anywhere.
No files selected
Add at least two PDF files to begin.
Compress PDF Online - Reduce PDF Size
Choose one PDF, enter the maximum file size you want, and create a smaller PDF.
- Target file size: Enter the maximum PDF size you want before compression starts.
- Clear completion status: See the result size, reduction percentage, and 100% completion state.
- Smaller PDF download: Download a compressed PDF that is easier to upload, email, or archive.
This document is processed locally. Your file is not uploaded anywhere.
This document is processed locally. Your file is not uploaded anywhere.
MB
No file selected
Select a PDF file and target size to begin.
All-in-one PDF editor
Use this online PDF editor to manage PDF documents in your browser.
- Easy editing: Add and adjust text, images, marks, and notes.
- Annotations and highlights: Add comments, highlights, pencil marks, checks, and crosses.
- Custom formatting: Change colors, opacity, font, size, and layout.
This document is processed locally. Your file is not uploaded anywhere.
This document is processed locally. Your file is not uploaded anywhere.
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100%
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PNG or JPG signature images are supported.
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Edit & Organize
Compress PDF Online - Reduce PDF Size
Reduce PDF file size. Upload files, set options, and download the processed result.
- Target file size: Enter the maximum PDF size you want before compression starts.
- Clear completion status: See the result size, reduction percentage, and 100% completion state.
- Smaller PDF download: Download a compressed PDF that is easier to upload, email, or archive.
This document is processed locally. Your file is not uploaded anywhere.
This document is processed locally. Your file is not uploaded anywhere.
No files selected
Select a file to begin.
How to use Compress PDF online
Quick answer: Compress PDF is a free browser-based tool for reducing PDF size. Upload one PDF, enter the maximum MB size you need, run the compressor, and download a smaller file for email, forms, portals, or archiving.
Use this compress PDF online workflow when a document is too large for email, an upload portal, a school form, or client handoff. Choose a target MB size, run the PDF size reducer, and download a smaller PDF from the same page.
- 1
Upload or drag your file into the Compress PDF workspace.
- 2
Review the visible options and confirm this is the right workflow for compress PDF online.
- 3
Run the tool and watch the status message until the browser finishes processing.
- 4
Download the completed file, then use the related links if the document needs another step.
What to know before using Compress PDF
Before you upload
- Enter the maximum MB size you need.
- Use the original high-quality PDF when possible.
- For very small targets, expect image-heavy pages to lose some detail.
After download
- Confirm the progress reaches 100% and the final size is shown.
- Open the compressed PDF and check small text and scanned pages.
- If quality is too low, rerun compression with a larger target size.
Make a PDF small enough to upload
Use this PDF size reducer when a form, email service, or document portal says your file is too large. Enter a target such as 10 MB, 5 MB, or 2 MB, then compress the PDF and check the final size before sending it.
Choose a target size
- Enter the maximum MB size required by the website or email service.
- Choose a realistic target if the PDF contains scans, photos, or detailed graphics.
Keep it readable
- Open the compressed PDF before submitting it.
- Check signatures, small text, stamps, and scanned pages after compression.
If it is still too large
- Try a smaller target size if the document still exceeds the upload limit.
- If readability drops too much, rerun compression with a larger target.
Common U.S. PDF upload size limits
When a website only says your PDF is too large, use this table to choose a realistic target before you compress PDF files. Limits can change, so check the source page before submitting anything important.
| Where you may upload a PDF | Published size limit | Good compression target | Source |
|---|---|---|---|
| USCIS online filing evidence (example: Form I-589) | 12 MB per file | Aim for 11 MB or less before uploading evidence. | USCIS |
| NVC / CEAC immigrant visa civil documents | 2 MB per scanned document | Compress each PDF below 2 MB and scan around 150 DPI when possible. | Travel.gov / CEAC |
| Form I-864 and NVC financial evidence in CEAC | 2 MB on CEAC Tips; some NVC guidance references 4 MB | Target under 2 MB when possible so the same PDF is accepted in stricter CEAC flows. | CEAC / Travel.gov |
| USAJOBS federal resume upload | 5 MB or less | Save as PDF and keep the resume under 5 MB. | USAJOBS Help |
| Common App SAT score report PDF | 2000 KB | Keep score-report PDFs under 2000 KB before uploading. | Common App Support |
| USA Staffing supporting documents | Under 5 MB per uploaded document | Keep transcripts, certificates, and supporting PDFs below 5 MB. | OPM USA Staffing |
| IRS Document Upload Tool | 15 MB per file | Compress tax notice responses and supporting PDFs below 15 MB. | IRS |
| Personal Gmail attachments | 25 MB attachment limit | Keep the total attached PDFs below 25 MB or Gmail may use a Drive link. | Google Help |
| Adobe Acrobat Sign documents | 10 MB per uploaded file on listed plans | Compress contract PDFs below 10 MB before sending for signature. | Adobe Help |
What about W-9, W-4, DS-11, I-9, or CMS-1500?
Many common U.S. forms do not have one universal PDF size limit attached to the form name. The limit usually comes from the place you upload it: an IRS notice response tool, CEAC, an employer onboarding portal, a health insurance payer portal, a school system, or an email attachment limit.
- IRS and tax forms: Form W-9, W-4, 941, 1040-ES, 1099-NEC, W-2, and Schedule C are often filed, mailed, given to a requester, or submitted through tax software. If an IRS notice asks you to upload PDFs through the IRS Document Upload Tool, use the 15 MB per-file limit above.
- Passport forms: Form DS-11 and DS-82 are usually handled through passport application or renewal instructions rather than a single public PDF upload limit for the form itself.
- Employment and healthcare forms: Form I-9 and CMS-1500 limits usually depend on the employer, payer portal, EHR, clearinghouse, or document system receiving the PDF.
Why use this free PDF compressor?
Target-size workflow
Target-size workflow
Enter the maximum MB size you need before compression starts, instead of guessing through a generic PDF editor.
Real compressor
Real compressor
The page has an actual upload, target size, compression status, result size, and compressed PDF download flow.
Quality checks
Quality checks
The guidance explains when scanned pages, photos, and tiny text may need a larger target size.
Connected tools
Connected tools
Internal links point to nearby PDF workflows such as merging, splitting, editing, image export, and Word conversion.
Need another smaller file?
Compress another PDF when the next file is too large.
Use the target size field when a website rejects your PDF for being too large. For scanned PDFs or documents with photos, choose a larger target if readability matters.
Other ways people search for this tool
This Compress PDF workflow is also useful when people search for reduce PDF size, PDF size reducer, free PDF compressor. The tool interface is currently in English, but the upload, compress, and download flow is the same document task.
Compress PDF FAQ
What is Compress PDF used for?
Compress PDF reduces PDF file size by rebuilding pages at a smaller image quality when needed. It is useful for upload limits, email attachments, scanned documents, and PDF files that need to stay readable while becoming easier to share.
Can I reduce PDF size to a specific MB?
Yes. Enter the target size in MB before you compress the PDF. Very image-heavy files may need a larger target to keep text and scans readable.
Is this the same as a PDF size reducer or free PDF compressor?
Yes. This free PDF compressor helps you reduce PDF size, check the final file size, and download a smaller PDF for upload, email, or sharing.
Can I use Compress PDF online?
Yes. Open this dedicated compress PDF online page, upload the supported file type, process the file, and download the result from the same page.
What should I check before sharing the result?
Confirm the progress reaches 100% and the final size is shown. Open the compressed PDF and check small text and scanned pages.
Related Edit & Organize tools
Continue with another focused workflow. These internal links help users and search engines understand how Compress PDF connects to nearby PDF tasks.