What this tool is for
Use the Image Compressor when a photo is too large for email, a website, a form, or everyday sharing. You control the quality level, so you can choose a smaller download while checking whether the image still looks right for its destination.
How to use it
- Choose a JPG, PNG, WebP, or HEIC image up to 50MB.
- After the file loads, set the quality slider. Start near 80% for a balanced result.
- Select Process Image and wait while the browser creates the new file.
- Compare the output size, then download the result. Try a lower quality if you need a smaller file.
What happens to your image
GuavaPix decodes the selected image and re-encodes its visible pixels inside your browser. The source file is not uploaded to GuavaPix. The downloaded format can differ from the source because browser encoders use an optimized JPG or WebP output.
Practical uses
- Shrink a phone photo before attaching it to an email.
- Reduce product images before adding them to an online store.
- Prepare a lighter image for a school or job application form.
- Cut image transfer size before publishing a blog post.
File size, quality, and dimensions
Compression removes or simplifies image data that is less noticeable to the eye. Lower quality usually creates fewer bytes, but fine textures, text, and sharp edges may show artifacts first. Compression does not guarantee a particular size; use a target-size tool when a form specifies 50KB, 100KB, or 200KB.
Important limitations
- Images with text or fine detail can show artifacts at low quality.
- The maximum selectable file size is 50MB, and very large images can exceed device memory.
- Animated images are processed as a still frame.
- The output may use JPG or WebP rather than preserving the original container.
Frequently asked questions
What quality setting should I use?
Start around 80%. Use 70–80% for web and email, then inspect the result before going lower.
Will compression change the image dimensions?
The standard compressor keeps the decoded pixel dimensions. Target-size tools may reduce dimensions when quality alone cannot reach the requested size.
Why is the result not dramatically smaller?
A source image may already be heavily compressed. Flat graphics and photos also respond differently to re-encoding.
Does GuavaPix keep my original image?
No. Processing happens locally in the current browser session, and GuavaPix does not receive or store the selected file.
Should I use the 50KB, 100KB, or 200KB tool instead?
Use a target-size tool when an upload form gives a hard limit. Use the standard compressor when visual quality matters more than an exact ceiling.