Does changing the PDF version remove incompatible features?

No. Changing the version label (for example from 1.7 to 1.4) only changes how the file announces itself. If the PDF uses features introduced in 1.5 or later — object streams, cross-reference streams, JPXDecode images — those features remain. This tool rebuilds the file with a matching write format, but it cannot automatically strip every high-version feature.

Why would I change a PDF version?

Common reasons: (1) older software refuses to open a PDF 1.7 or 2.0 file; (2) some online forms require a specific version; (3) you want to force classic cross-reference tables instead of compressed object streams for maximum compatibility.

🔢 Change PDF Version WASM

Q: Is my PDF uploaded to a server?

No. Everything runs in your browser. Your file never leaves your device.

Upgrade or downgrade the version label of any PDF — from legacy 1.4 compatibility to the latest PDF 2.0 standard. The tool also rebuilds the internal structure to match.

Important: Changing the version label doesn't magically remove features. If your PDF uses object streams (a 1.5+ feature) and you set it to 1.4, we do rebuild the file with a classic cross-reference table — but we can't automatically strip every newer feature. This tool changes the header, catalog entry, and rebuild format. For strict feature downgrade you'd need a desktop tool like Ghostscript.

Upload PDF

Drop your PDF below — we'll detect its current version first.

Drop your PDF here or click to browse

Only .pdf files • Works offline • Your file never leaves this device

Target Version

Pick the version you want the output PDF to announce itself as.

PDF Version

Options

Also set catalog /Version entry

Sets the version in the document catalog. Recommended for downgrades.

Force classic cross-reference

Writes a traditional xref table instead of compressed streams. Required for PDF 1.4 and below.

Preserve metadata

Keep title, author, and subject from the original PDF.

Verify output

Re-open the modified PDF with pdf.js to confirm it still works.

document.pdf

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Preview (page 1)

The visual content of the PDF is not affected by a version change.

Processing… 0%

Version changed successfully!

Before

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After

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Original Size

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New Size

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100% private. Nothing was uploaded.

How to Change a PDF Version

Upload Your PDF

We detect the current version from the file header.

Pick Target Version

Choose 1.4, 1.5, 1.7, or 2.0 — we'll rebuild the file to match.

Download

See before/after, then download your re-versioned PDF.

Frequently Asked Questions

Does changing the version remove features?

Not automatically. Changing a PDF's version label to 1.4 doesn't turn a 1.7 file into a 1.4 file. The version is just a declaration — the file still contains whatever features it originally had. What this tool does do: it rebuilds the file with a compatible write format (classic xref tables for 1.4, object streams for 1.5+), updates the header to your target version, and sets the catalog /Version entry. That's the maximum a browser-based tool can honestly do.

For a genuine feature-level downgrade, use gs -dCompatibilityLevel=1.4 -sDEVICE=pdfwrite (Ghostscript) on the command line — it actually rewrites content streams and strips features.

Why would I want to change a PDF version?

Three common reasons: (1) Older software, bank portals, or government forms reject files marked as PDF 1.7 or 2.0 — dropping to 1.4 often fixes the rejection. (2) Some online tools only accept one specific version. (3) You want to force classic cross-reference tables (PDF 1.4 format) for maximum compatibility with legacy readers.

What's the difference between PDF 1.4 and 1.5+?

PDF 1.4 uses classic cross-reference tables (an ASCII index at the end of the file). PDF 1.5 introduced object streams and cross-reference streams — the index itself is compressed, which makes files smaller and faster to parse. This tool writes classic xref for 1.4 targets and object streams for 1.5 and above.

Will my PDF still look and work the same?

Yes. Pages, text, images, links, forms, annotations, and interactive elements all stay intact — we only modify the version declaration and rebuild the container. If you enable "Verify output", we re-open the modified PDF with pdf.js to confirm it still loads correctly.

Is my PDF uploaded to a server?

No. Everything runs in your browser using pdf.js and pdf-lib. Your file never leaves your device. You can even run this tool offline after the page has loaded once.

What if my file is already the target version?

We'll still rebuild it (which normalizes the structure and can fix small inconsistencies), but the version label won't change. If the rebuild produces a larger file with no benefit, we offer the original for download instead.