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No registration required · Works in browser · Files deleted automatically 120 minutes after processing.

Compare PDF online

Compare two PDF versions and find the differences before approval, publishing, or client delivery, without reading the whole file by hand.

This tool is especially useful when you need a clear result for tasks such as Check a contract after edits. or Compare before and after versions..

  • No sign-up
  • Files up to 200 MB
  • Deleted after 120 minutes
  • Secure

Process file

Drag and drop files or choose them from your device.

or choose on your device

.pdf, .zip · Max files 2

Files are processed automatically on our servers and are not sent to third-party file-processing services. Results are available for 120 minutes after processing and then deleted automatically. We do not read your files, back them up, or use them to train AI models. Terms · Privacy · File Processing Policy

How processing works

  1. Step 1

    Upload the two PDF versions.

    Upload the two PDF versions. This step defines the source material and immediately shows whether the file fits the current format and uploader rules.

  2. Step 2

    Confirm that the right files are being compared.

    Confirm that the right files are being compared. Review the page order, selected options, and general workflow here so you do not need a second run for an avoidable mistake.

  3. Step 3

    Run the comparison.

    Run the comparison. Once started, the operation runs inside the standard browser workflow without forcing sign up for the basic use case.

  4. Step 4

    Review or download the differences.

    Review or download the differences. A quick final review confirms that the output is actually ready for email, printing, storage, or the next tool.

Use cases

Check a contract after edits

Check a contract after edits. This is common when the document needs to be ready for sending without another round of manual cleanup.

Compare before and after versions

Compare before and after versions. This use case fits everyday work where the goal is to isolate the right result without rebuilding the whole file from scratch.

Find changes before signing

Find changes before signing. It is a practical option when several recipients or systems need a cleaner and more focused output.

Prepare differences for review

Prepare differences for review. This is useful in routine office work when the final file needs to be clear, compact, and ready for the next step.

What to keep in mind

  • Comparison shows differences; it does not decide which version is correct.
  • Use Annotate PDF to comment on found changes.
  • Verify both source versions before sharing the result.

When this tool is especially useful

This tool is especially useful when you need a clear result for tasks such as Check a contract after edits. or Compare before and after versions..

Compare PDF online is most useful in workflows where people need a fast, understandable output without rebuilding the whole document manually or leaving the upload-run-download path.

What to check before upload

Before you run the tool, check the source file, page order, and whether you selected the right operation for the job. Large or complex files can behave differently depending on document structure and the current uploader limits.

If processing does not start or ends with an error, first verify the format, try a smaller file, or split the task into smaller parts. The page keeps direct paths to FAQ, Limits, and Security for that reason.

What to do after processing

After processing, download the result and review the final document for page order, readability, file size, and overall presentation. That review step matters most for compression, conversion, and repair scenarios.

If you need a follow-up action, use the related tools block to move to the next step without extra searching.

Result checks and privacy

  • Confirm the file opens cleanly in the source app before you upload it.
  • Use a smaller file or a narrower page range when processing is slow or fails.
  • Move to a related tool when the document needs the next step in the workflow.

Secure temporary processing

Files are used only for the selected operation and are automatically deleted after processing is finished. We do not use uploaded documents to train AI models.

Frequently asked questions

Compare two PDF versions and find the differences before approval, publishing, or client delivery, without reading the whole file by hand.
Comparison shows differences; it does not decide which version is correct.
Files are used only for the selected operation and are automatically deleted after processing is finished. We do not use uploaded documents to train AI models.
No. Uploaded documents are not used to train AI models.
Files are used only to complete the selected action and are automatically deleted after processing.
The current authoritative limits should be visible in the uploader and on the Limits page. If the file does not pass, try a smaller source file or split the task.
Yes. The basic workflow should stay available in a mobile browser as long as the source file and current runtime limits allow processing.

Helpful pages

If you need more detail about limits, file retention, or security, open these pages.

FAQ

Answers to common questions about iHatePDF: whether registration is required, how files are processed, where to check limits, and whether it's safe to upload documents.

Limits

iHatePDF limits depend on the selected tool, current service configuration, and plan. Current values are shown in the upload interface. Formats: PDF, JPG, PNG, HEIC, Word, Excel, PowerPoint, HTML.

Security

How ihatepdf.pro handles your files: temporary processing, automatic deletion after processing, no AI model training.

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