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Free · Private · No Upload

Image Compressor

Compress images online — reduce file size instantly, private, never uploaded.

Drop an image and shrink its file size in your browser with a live quality slider. See exactly how much smaller it gets before you download — nothing is uploaded, no sign-up, no watermark.

Drop or click to upload

Drag & drop or paste from clipboard

JPG, PNG, WebP — 15MB max

100% private No sign-up Unlimited No watermark Free forever

Tip: 70–80% quality usually cuts file size dramatically with no visible difference. Drag the slider after uploading to find your sweet spot. Compressed images are saved as optimized JPG.

Compressing…
Before
After · Compressed
75%

Compress Images For

Faster Websites Email Attachments Social Uploads Product Photos Blog Images Portfolios Page Speed Web Forms

Reduce image file size for faster websites, email attachments, social uploads, and quicker page loads — free and in your browser.

How it works in three steps

1

Drop an image

Upload, drag and drop, or paste an image from your clipboard. Supports JPG, PNG, and WebP files up to 15MB.

2

AI runs in your browser

Our AI identifies the subject and creates a precise transparent mask directly on your device. No image uploads or cloud processing.

3

Download or edit

Download a transparent PNG instantly or continue editing by adding text, shapes, effects, or a new background.

Free Online Image Compressor

ThumbCrafted's free image compressor reduces your image's file size right inside your browser. Drag the quality slider and watch the file size drop in real time — then download when it looks right. Because everything runs locally with your device's own image encoder, your image is never uploaded.

Smaller images mean faster websites, quicker email attachments, and snappier social uploads. Most photos can be cut by 60–80% with no visible difference in quality.

How Image Compression Works

The compressor re-encodes your image as an optimized JPG at the quality level you choose. Lower quality means a smaller file with slightly more compression; higher quality keeps more detail at a larger size. Find the balance that works for your image, then download — free, with no sign-up and no watermark.

Frequently asked

How do I compress an image?
Drop or upload an image, then drag the quality slider until the file size looks right. The preview and size update live — click Download to save the compressed image. Nothing is uploaded.
Does compressing reduce quality?
A little — that's the trade-off for a smaller file. At 70–80% quality most images look identical to the original while being much smaller. The slider lets you choose the balance.
Is my image uploaded anywhere?
No. Compression happens entirely in your browser using your device's image encoder — your file never leaves your device.
What format is the compressed image?
An optimized JPG, which gives the best size reduction for photos and web images. For transparency, use a PNG tool instead.
How much smaller will my image get?
Most photos shrink 60–80%. The exact savings show in real time as you move the slider.
Is there a file size limit?
Images up to 15MB are supported.
Is it free?
Yes. Unlimited compression, no sign-up, and no watermark.
Does it work on mobile?
Yes. Compression is instant on phones and desktops alike.
How do I compress an image for email or a website?
Aim for 70–80% quality — it usually drops the file well below typical email and upload limits while staying crisp.