Compresseur d'image

À PROPOS DE CET OUTIL

Upload an image and drag the quality slider to shrink its file size, then export as JPEG, WebP, or PNG depending on what you need. Compression removes redundant or less-visible data from the file — lossy formats like JPEG and WebP can cut file size dramatically with only a small, often unnoticeable drop in visual quality. This is the fast option when you just need a smaller file before uploading to a website, attaching to an email with a size limit, or submitting to a form that rejects large images — no need to open full editing software like Photoshop for a simple size reduction.

COMMENT UTILISER

1. Upload the image you want to shrink.
2. Move the quality slider to find the size-versus-clarity balance you're comfortable with.
3. Pick an output format — JPEG, WebP, or PNG.
4. Compare the before-and-after file size shown on screen.
5. Download the compressed file.

CAS D'USAGE COURANTS

• Someone attaching photos to an email with a strict attachment size limit, like 25MB on Gmail.
• A job applicant compressing a headshot so it fits under a resume upload form's file size cap.
• A small business owner shrinking product photos before uploading them to a website builder with slow load times.
• A student compressing scanned document photos before submitting an assignment through a portal with upload restrictions.
• A photographer sending low-resolution previews to a client before delivering full-quality final files.

CONSEILS ET ERREURS COURANTES

• Push the quality slider too low on a JPEG and you'll start seeing blocky artifacts, especially around sharp edges and text — back off if that appears.
• PNG compression here is lossless, so file size savings come only from re-encoding efficiency, not from reducing image quality.
• Compressing an already-compressed JPEG repeatedly gradually degrades quality — always compress from the original file, not a previously compressed copy.
• If the destination supports it, try WebP first since it usually gets a smaller file at the same visual quality than JPEG.

AUTRES QUESTIONS

What's the difference between this and the Image Resizer tool?

Resizing changes the pixel dimensions of the image; compressing keeps the same dimensions but reduces file size by adjusting encoding quality — you can use both together for the biggest size reduction.

Can I compress a PNG without losing any quality?

Yes, PNG compression is lossless, so re-encoding it more efficiently reduces file size without changing a single pixel value.

How much can I realistically shrink a photo without visible quality loss?

For most JPEG photos, quality settings around 70-80% typically cut file size substantially with no visible difference from the original at normal viewing sizes.

Does compressing an image remove its metadata, like EXIF data?

It can, depending on the export settings — many compression processes strip EXIF data as a side effect, which is worth knowing if you wanted to keep camera details or intentionally want them removed for privacy.

GUIDES ASSOCIÉS

OUTILS ASSOCIÉS