1Drop your PSD files into the box above, or pick them from your device — there is nothing to install and no account to create.
2Choose how hard to squeeze: a quality or bitrate target, and optionally smaller dimensions if size matters more to you than detail.
3Start the job and let the workers re-pack the file; your original is never modified in place.
4Compare the new size against the original, then download the compressed PSD file.
Compress PSD FAQ
What do I get back, and can I control the trade-off?
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A single compressed file per input, at a quality or bitrate level you choose rather than a fixed default. If the result is not small enough, changing the dimensions or the duration will do more than pushing the quality slider further down.
How does Compress PSD actually make the file smaller?
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Concretely, the composite and the layer data are recompressed with RLE or ZIP so the document still opens in Photoshop with its stack intact; the large win, if you want it, is flattening, and that is a deliberate choice rather than a side effect. Nothing about it depends on you installing software: the job runs server-side and hands back a finished file.
Is there anything specific to PSD I should know before compressing?
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Yes — layers, masks and adjustment layers are live objects rather than pixels, so a tool either preserves them or composites them down — there is no middle option. It is worth knowing before you overwrite an original you might need again.
What is the most common mistake when compressing PSD files?
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Compressing the same file repeatedly. Each pass on a lossy format is a fresh generation of loss and the savings shrink while the damage accumulates. Go from the original to your target in one step, and keep the original.
What can I upload to Compress PSD?
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Photoshop PSD documents, including ones with layer groups, layer masks, adjustment layers and blend modes. You do not need a Photoshop licence to work with them here.
Is there a file size limit on Compress PSD?
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Yes: free accounts process images up to 5 MB each, and layered documents reach that faster than anything else in the image family because every layer stores its own pixel data. A working PSD with dozens of layers can exceed that easily; flattening a copy in Photoshop first, or converting to TIFF, is the usual way around it.
Will Compress PSD lower the quality of my PSD files?
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Pixel data in a PSD is stored losslessly, so nothing degrades. The real question is structural: whether the result keeps the layer stack or arrives as a finished composite. Anything that has to produce a flat image applies blend modes, masks and opacity exactly as Photoshop previews them.
Can I run Compress PSD on several PSD files at once?
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Yes, though layered documents are the heaviest thing in the image family to decode, so a batch of large PSDs takes noticeably longer per file than the equivalent JPGs.
Why does a EPUB site host Compress PSD?
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EPUB.to is built around the open eBook format — XHTML in a zip, reflowable by design, and readable on hardware nobody has thought about the layout for. A book is a zip full of markup, images and fonts, so almost every job people bring to an eBook site is really a job on one of those things. Compress PSD runs on the same upload and the same account as the conversions because that is where it is needed.
What should I do with the result once Compress PSD is finished?
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The converter on this site moves books between EPUB, MOBI, AZW3, PDF and DOCX, so a title ends up on whatever hardware is actually going to read it. Doing that after Compress PSD means the conversion is made from the version you settled on, not from the one you were still fixing.
Is Compress PSD here the same tool the sibling sites run?
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The engines are shared — the same toolchain, the same workers, the same limits. What a EPUB site adds is a view on reflow: which of these operations a reflowable book genuinely supports, and which ones only make sense on the fixed-layout media inside it. It also starts from one fact about the format this site is named after: the book is a zip of XHTML with a manifest, so the text costs almost nothing and every decision that matters is about the embedded images and font subsets.
Do I need an account, and does anything get kept?
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No account, and nothing is kept: uploads are deleted from the workers shortly after the job finishes, nothing is read and nothing is indexed. Free accounts exist for history and batch size, not for access.
