AlphaConverter

Flatten PDF (lock form fields)

    Turn what you typed into PDF form fields into ordinary page content that can no longer be edited. It does not reduce the file size.

    • Files are converted on your device and never uploaded
    • Free, with no limit on file size or count
    • No installation and no sign-up

    How to use

    1. Choose files or drop them onto the box. You can add several at once.
    2. Check the options and press the action button.
    3. Download the result. Multiple results come as one ZIP.

    What makes it different

    About this tool

    Flattening turns what was typed into a PDF form (the fill-in boxes you click on) into ordinary text on the page. Use it after filling in a form when you do not want the recipient to change the answers, or when you want it to look the same in every viewer. It is not a way to make a file smaller; use Compress PDF for that. A document without form fields is saved as it is.

    Your files are never uploaded

    Most converter sites upload your files to their servers to process them. This tool does the conversion inside your browser, so the files never leave your device. With no server involved, there is no upload to wait for and no size or file-count limit set by the site.

    Free, with no limits

    No sign-up and no payment. There is no cap on file size or number of files.

    Korean HWP documents too

    Convert HWP and HWPX, as well as Word, Excel and PowerPoint documents, to PDF.

    Drop a file, it works out the rest

    The format is detected automatically and you only see the formats it can become. You can add many files at once.

    Frequently asked questions

    Are my files uploaded to a server?

    No. The conversion runs in your browser and the files stay on your device.

    Is there a file size or file count limit?

    The site sets no limit. The work is done in your device's memory, though, so very large files can fail on devices with little memory.

    Is it really free?

    Yes. There is no sign-up and no payment. Because nothing is converted on a server, the tools cost very little to run.

    Which formats are supported?

    It reads images your browser can open, including JPG, PNG, WebP, HEIC/HEIF, AVIF, GIF and BMP, and saves them as JPG, PNG or WebP. For animated GIFs, only the first frame is converted.