Enter the real limit
Choose a custom maximum such as 350 KB, 500 KB, 750 KB, 1 MB or another size.
Exact upload-limit compression
Compress PDF to an exact size online
Set the maximum file size your portal accepts in KB or MB, then compress toward that real upload limit.
USD 0.49 per successful PDF · preview before payment · no subscription
Why exact size
Solve the upload limit, not just “make the PDF smaller”
Use the receiving portal’s real maximum instead of guessing a compression level.
Measure the actual result
FilexFlow reports the real compressed size and shows a preview before payment.
Pay only for a reached target
A successful target-size PDF costs USD 0.49. If the target is missed, you are not asked to pay.
How it works
From portal limit to measured result
A functional exact-size workflow in three steps.
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1
Enter the maximum size
Copy the file-size limit shown by the destination portal and enter it in KB or MB.
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2
Compress and verify
FilexFlow progressively compresses the PDF and measures the real output size.
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3
Download a successful result
If the target is reached, preview the result and unlock that exact PDF for USD 0.49.
Upload-limit use cases
When “file too large” is the real problem
Exact-size compression is useful whenever a form or portal enforces a maximum PDF size.
Applications
Government and application portals
Work toward the stated maximum for forms, immigration, KYC and other document submissions.
Enter your upload limitStudy & work
University and job applications
Use the exact PDF limit shown by the application system instead of compressing blindly.
Compress to exact sizeSharing
Email and document portals
Set a practical maximum size when an attachment or document system rejects large PDFs.
Choose a maximum sizeQuality and transparency
The target is explicit and the result is measured
FilexFlow shows what happened before you decide whether to pay.
- Private server-side processing.
- Real output size measured from the compressed PDF.
- Screen-resolution preview before payment.
- No charge when the selected target is missed.
Frequently asked questions
Exact-size PDF compression questions
How custom KB and MB limits work.
Can I enter a custom PDF size in KB or MB?
Yes. Enter the maximum size required by the receiving service in KB or MB. FilexFlow converts that value into the compression target.
Can I compress a PDF to 350 KB, 450 KB or 750 KB?
You can enter those custom targets. Whether the PDF can safely reach them depends on the document content and starting size.
What happens if my PDF cannot reach the target?
FilexFlow reports the best measured result and does not ask for payment when the selected target is missed.
Does reaching the target guarantee a portal will accept the PDF?
No. File size is only one possible requirement. Always verify the portal’s current file type, page, content and upload rules.
Use the portal’s real limit
Compress PDF to the exact size you need
Enter a maximum in KB or MB, preview the measured result, then pay USD 0.49 only when the target is reached.