JPG ONLY • PRIVATE • NO SIGNUP
Compress JPG Images Online
Reduce JPG and JPEG photo size in your browser. Choose a maximum file size, preview the compressed result, compare the before-and-after sizes and download an optimized JPG without sending it to our servers.
Drop your image here
Or choose an image from your device
JPG and JPEG supported
Photo dimensions & file-size quick reference
Dimensions are width × height in pixels. Suggested file sizes are compression targets, not platform limits.
| Destination | Dimensions / ratio | Export | File size / limit |
|---|---|---|---|
| Etsy listing photo | 2000 × 2000 px or larger on both sidesSquare or landscape; leave room for thumbnail crops | JPG / PNG | Aim for 1 MB or lessUpload guidance, not a hard maximum: Etsy warns that larger files may fail on slow connections. |
| Instagram feed photo | 1080 × 1080 or 1080 × 1350 px1:1 square / 4:5 portrait · practical export sizes | JPG | Suggested target: 1–2 MBResizeFox target, not an Instagram upload limit. Other supported ratios may also work. |
| Facebook feed photo | 1080 × 1080 px1:1 square · practical export size, not a required size | JPG / PNG | Suggested target: 1–2 MBResizeFox target, not a Facebook upload limit. Check the specific post or ad uploader. |
| Instagram / Facebook Story or TikTok artwork | 1080 × 1920 px9:16 vertical · suggested image canvas | JPG / PNG | Suggested target: 1–2 MBImage preparation only; video limits do not apply here. Confirm the limit in your chosen uploader. |
| Pinterest standard image ad | 1000 × 1500 px2:3 · Pinterest recommendation | JPG / PNG | Maximum: 20 MB desktop / 32 MB in appFor standard image ads created through Pinterest’s business tools. |
Need another shape? Crop first, then resize and compress. Keep your original; do not sacrifice detail just to reach a suggested target. JPG is usually suitable for photos. Etsy does not preserve PNG transparency.
Sources and scope · Etsy/Pinterest checked September 19, 2026
Etsy and Pinterest guidance was checked on this date. Instagram, Facebook and vertical-canvas entries are practical ResizeFox suggestions, not a complete list of accepted dimensions or verified maximum file sizes. Check the destination’s uploader for its current limit: posting apps, advertising tools and APIs may have different requirements.
Three practical steps
How to Compress a JPG Image
Choose a JPG
Select a .jpg or .jpeg photo from your device, or drag it into the upload area.
Set a useful target
Choose a maximum size that matches the destination. Resize the dimensions too if they are unnecessarily large.
Inspect and download
Review the preview, original size, compressed size and percentage saved before downloading the JPG.
Why JPG Files Can Become Large
A JPG may be large because its pixel dimensions are far bigger than the intended display size, it was exported at a very high quality, or the photo contains noise, texture and fine detail that are harder to encode efficiently. Camera images can combine all three. Metadata can add some bytes too, but dimensions and visual complexity usually have a much larger effect.
JPG Compression and Image Quality
JPEG uses lossy compression. It represents blocks of pixels more efficiently and removes some visual information, especially detail the encoder considers less noticeable. Stronger compression normally creates a smaller file but may soften textures, flatten gradients or produce visible artifacts around text and sharp edges. ResizeFox searches for a JPG quality level that aims to stay within your chosen target, so always judge the preview as well as the file-size number.
What JPEG Quality Percentage Means
A JPEG quality percentage is an encoder setting, not a promise that the saved image retains that percentage of its original detail. A setting of 80 does not mean “80% of the quality,” and values are not directly comparable between every editor or browser. On this tool, you choose a target file size and the compressor tests quality levels automatically. A larger target generally gives the encoder more room to preserve detail; a smaller target usually requires more loss.
When to Resize as Well as Compress
Lower the dimensions when the image has more pixels than its final use needs. This is often the cleanest way to reduce a camera photo for email or a website. Use the image resizer when dimensions are your main concern.
When Compression Alone Is Enough
Keep the current dimensions when they already match the destination and only the file size is too high. For mixed image formats, the general image compressor also accepts PNG and WebP.
JPG vs PNG vs WebP
JPG
Usually a strong choice for photographs and broad compatibility. It is lossy and does not support transparency.
PNG
Best suited to transparency, screenshots and graphics that need crisp lossless detail. Photo-like PNG files can be large.
WebP
A modern format that can be efficient for web photos and graphics. Check the destination when a form requires JPG specifically.
JPG Compression for Everyday Tasks
Photos
Create a lighter sharing copy while keeping the original high-resolution file safely stored.
Reduce attachment size to improve sending speed and stay below a mail provider's attachment limit.
Websites
Use appropriately sized JPGs to reduce transferred bytes and help pages display sooner.
Online forms
Match the form's stated file-size and dimension rules instead of compressing more than necessary.
For a complete attachment workflow, see how to prepare images for email. Product sellers can also review the Etsy listing image workflow before exporting product photos.
Privacy by design
Browser-Based JPG Processing
ResizeFox processes your JPG locally with browser image and canvas capabilities. The selected photo does not need to be uploaded to ResizeFox servers for compression, and the compressed result remains on your device unless you choose to send or upload it elsewhere.
Need a Specific JPG File Size?
Use the matching tool when a website or form gives you an exact maximum. The achievable visual quality still depends on the photo.
FAQ
JPG Compression Questions
Is JPG compression lossless?
Standard JPG compression is lossy. It reduces file size partly by discarding image information, so stronger compression can introduce softness, blocks or halos around detailed edges. A sensible target can make those changes difficult to notice at normal viewing size, but it is not accurate to promise zero quality loss.
Are JPG and JPEG the same format?
Yes. .jpg and .jpeg are filename extensions for the same JPEG image format. ResizeFox accepts both when the browser identifies the file as a JPEG image, and downloads the compressed result as a .jpg file.
What target size should I choose for a JPG?
Use the largest file size that satisfies your email, website or form limit. A detailed photo generally needs more data than a simple image. Starting with a realistic target helps preserve more detail than forcing every photo into an unnecessarily small file.
Should I reduce the dimensions before compressing?
Reduce the pixel dimensions when the photo is larger than its destination requires. A camera image several thousand pixels wide does not need to remain that large for a small profile photo, email preview or website card. Resizing first often reduces the amount of compression needed.
Does ResizeFox upload my JPG?
No. JPG decoding, resizing and compression happen locally in your browser. The image does not need to be uploaded to ResizeFox servers for processing.