Check whether two files match with SHA-256
Calculate a digest of the exact file bytes and compare it with a trusted value.
Open the toolBefore you begin
Keep the original document somewhere safe. PDF Studio processes document files in your browser and does not add a watermark. Browser storage is not a backup: download important results before closing the tab. For a large file, start on a device with enough memory and use a small sample to confirm the settings.
Follow these steps
- Open Calculate SHA-256 and choose your file.
- Calculate the digest and copy the on-screen value or download the report.
- Compare all 64 hexadecimal characters against a trusted reference.
Check the result
Compare digests of the exact files. A small byte change should produce a different digest.
Use the result preview to catch visible problems, then reopen the downloaded file in the reader or application where you plan to use it. A completed processing action only means an output was produced; it does not prove that the document meets every requirement of a job portal, recipient or printer.
Know the limitations
A matching hash supports byte identity. It does not establish that the source is trustworthy or that a document is safe.
Privacy and saved files
Choosing a file does not upload its contents for processing. Saved drafts, signatures, recipes and My files belong to this browser profile on this device. Delete local copies when using a shared computer. Optional site analytics count usage without including document contents or filenames. Some fonts, libraries and OCR models need an internet connection; installing the app does not guarantee offline operation.
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