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    Convertly Converter

    Reduce a WOFF file

    Compress WOFF (Web Open Font Format) files, the standard web font format.

    Accepted source formats

    WOFF

    How it works

    1

    Drop your WOFF or TTF.

    2

    Choose output format (WOFF2 recommended, best ratio).

    3

    Download the compressed font, ready to integrate via @font-face.

    Common mistakes

    • Using a source file of poor quality.
    • Publishing without checking the final result.
    • Confusing file size, dimensions and quality.
    • Overwriting the original file without keeping a copy.

    Pro tips

    • Always keep an original version.
    • Test several settings before downloading.
    • Use WebP for the web when possible.
    • Choose descriptive file names for SEO.

    Privacy and file handling

    File handling depends on the selected tool and format. For sensitive files, review the tool information before starting the operation.

    How to convert a WOFF file to Reduce a WOFF file?

    Drag and drop or select your WOFF file from your device. Click "Convert" and wait a few seconds. Get your converted Reduce a WOFF file file instantly. A quick check can prevent problems later. The practical file-size limit depends on the format, browser and memory available on your device.

    Supported formats

    Source format: WOFF. Target format: Reduce a WOFF file. Adjust one option at a time when possible and keep the original file, which makes it easier to compare versions if the result needs another pass. If a file fails, try a smaller version or split it when the tool supports that workflow.

    What is the maximum WOFF file size?

    The practical file-size limit depends on the format, browser and memory available on your device. If a file fails, try a smaller version or split it when the tool supports that workflow. Some elements may change during conversion, so open the output and check it before using or sharing it.

    Which browsers are compatible?

    Use a recent, up-to-date browser. Behaviour can vary with the file format, available memory and the features supported by your device. Always check the output file before sharing it. The final format should match how you plan to use it. Keep the original until you have approved the result.

    Can I use the tool on mobile?

    You can try the tool on a phone or tablet with a recent browser. Large files may require more memory or be easier to process on a desktop computer. Choose a file, run the conversion, then check the result before downloading it. Current quotas and higher plans are shown on the Pricing page.

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    Guides and tutorials

    Learn how to use our tools with our detailed guides.

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    Frequently asked questions

    Yes, all modern browsers (Chrome, Firefox, Safari, Edge) support WOFF2 since 2016+. Only Internet Explorer 11 doesn't — <1% usage in 2026. For those rare cases, keep a standard WOFF as @font-face fallback.

    Yes, this is the most efficient optimization: a full font weighs 200-500 KB, a subset containing only Latin-1 (250 chars) weighs 30-80 KB. Typical 70-90% weight reduction.

    No, each style (regular, bold, italic) is necessarily a distinct file — that's what @font-face loads on demand. Our tool lets you optimize each style individually.

    For the web, neither — WOFF2 is the standard. For print or desktop application, OTF offers more features (advanced ligatures, stylistic variants). TTF remains the simple universal format.

    No, WOFF2 compression is lossless: each glyph stays geometrically identical. On-screen or print rendering is strictly the same as the source TTF/OTF.
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