1Upload the JPEG images you want resized — work from the largest original you have rather than from a copy you already shrank once.
2Type a target width, a target height or a percentage, and leave the aspect-ratio lock on unless you deliberately want stretching.
3Run the resize; every file in the batch is taken to the same target in a single pass.
4Download the resized JPEG file, or the whole set together as one archive.
Resize JPEG FAQ
Does the source format affect the result of a resize?
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It does. JPEG is the same codec as JPG under a longer extension — identical DCT pipeline, identical quantisation tables, nothing about the pixels changes with the filename. That is what decides whether shrinking the file is purely a question of pixels or also a question of re-encoding.
Is there anything specific to JPEG I should watch for?
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Yes — the .jpeg and .jpg extensions are the same bitstream, so nothing here behaves differently from a .jpg — only the filename changes. Worth checking before you resize a file you will not be able to regenerate.
What is the most common mistake when resizing JPEG images?
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Upscaling. Enlarging cannot invent detail that was never captured, so the result is a soft version of the original at a bigger size. Always resize down from the largest source you have, and resize once rather than in stages.
How does Resize JPEG change the dimensions?
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Concretely, the image is resampled with a Lanczos filter and then re-encoded, which means a resize is also a re-compression — so do it once from the largest original you have rather than in stages. You give it a target width, a target height or a percentage, and it works from the original rather than from a previously resized copy.
Can I run Resize JPEG on several JPEG images at once?
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Yes. Drop the whole set into the upload area and they queue in parallel with identical settings — that is the main reason to do this in a browser rather than one file at a time in an editor. Free accounts run one file per batch; a pass lifts that.
What happens to EXIF and colour profile data?
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Camera EXIF (ISO, shutter, lens, GPS) and the embedded ICC profile are carried across by default, because dropping the profile is what makes colours shift on re-import. Use the privacy option to strip metadata before download if you are about to publish the file.
Is there a file size limit on Resize JPEG?
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Yes: free accounts process images up to 25 MB each, which covers essentially every camera JPG and phone photo; the work is done by libjpeg-turbo and libwebp, the same libraries a desktop editor links against. Larger files are the one thing the free tier will stop you on, and the limit is per file rather than per batch.
Will Resize JPEG lower the quality of my JPEG images?
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A lossy source is already the result of one quantisation pass, and any operation that has to re-encode adds a second. Where the job can be done without touching the pixel data we do that instead, and where it cannot you choose the quality factor yourself rather than getting a fixed default.
Why does a Word site host Resize JPEG?
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WORD.to is built around the editable end of a document's life — the DOCX that is still being written, still being styled and still being argued over, before anyone flattens it for sending. Office files are containers full of other people's media — images, embedded audio, fonts — so the work people need on them is usually the work they would need on those contents anyway. Resize JPEG shares the upload, the caps and the account with the conversions for that reason.
What should I do with the result once Resize JPEG is finished?
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The converter on this site takes documents out to PDF for sending, to images for embedding and to plain text for anything that has to read them programmatically, and back the other way. Doing that afterwards keeps the editable original around, which is the part you cannot get back once it has been flattened.
Is Resize JPEG here the same tool the sibling sites run?
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The engines are shared — the same document toolchain, the same workers, the same limits. What a Word site adds is a view on what survives leaving the Office format and what does not, which is the question every one of these jobs actually turns on. It also starts from one fact about the format this site is named after: the document is a zip of XML, so text edits are cheap and the weight is almost always the embedded images.
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.
