Convert MBOX to WebP
Convert MBOX to WebP online: every email in the archive laid out as readable pages, saved as a compact WebP image. Free, no sign-up.
Drop your MBOX files here
Up to 50MB per file.
Conversion Settings
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your MBOX files
Drag and drop or select MBOX files from your device. You can upload multiple files at once.
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Configure Output
Choose any available WebP output options, then start the conversion.
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Download WebP files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert MBOX to WebP?
MBOX stores a whole mail folder in one file and is used by Thunderbird, Apple Mail exports and Google Takeout. The image shows each message in turn, every one with its own table of From, To, Cc, Subject and Date, followed by its body and any attachment names, beneath an “MBOX email archive” heading.
WebP stores the rendered image in a modern, efficient format, so the file is noticeably smaller than an equivalent PNG or JPG.
Frequently Asked Questions
How do I convert MBOX to WebP?
Drop your MBOX file above and press Convert. Our servers split the archive into its messages, lay out each one with its headers and body, and render the pages. The result is saved as a compact WebP image, ready to download.
How are the many emails in an MBOX file arranged in the WebP?
They appear one after another in the order they are stored, each starting with its own header table.
Which programs' MBOX exports can be converted to WebP?
Thunderbird, Apple Mail and Google Takeout all write standard mailboxes where each message begins with a “From ” line, and the converter splits the file on those lines.
What happens when a MBOX file fills several WebP pages?
Each page is rendered at 144 dpi and saved as its own WebP image, named page-1, page-2 and so on, and they download together as one ZIP. A single page downloads as one WebP file.
How much smaller is the WebP from a MBOX file?
WebP typically produces files around a quarter to a third smaller than JPG at similar visual quality, and far smaller than PNG, while text and lines stay clear.
Is my .mbox file kept private?
Your file is uploaded over an encrypted connection, converted on our servers and deleted automatically within 24 hours. We never read, share or keep your files, and no account is needed.