How do I compress an image to 150KB?

Upload your photo and the tool auto-targets 150KB by lowering quality just enough to fit. You can fine-tune the slider afterwards; the live size readout shows when you are under 150KB.

Will compressing to 150KB reduce quality?

We keep the highest quality that still fits 150KB. For typical photos 150KB keeps good detail; very large originals may soften slightly, which is expected at this size.

What formats can I compress to 150KB?

JPG, PNG, WebP and GIF inputs are supported. JPEG output usually reaches 150KB with the best quality-to-size balance.

Is the 150KB compressor free and private?

Yes. It is free to use, and uploads are processed on secure servers and auto-deleted after processing.

Processed output — A detailed photo and its 150KB version, which looks the same, with both file sizes shown.

Source — A detailed photo and its 150KB version, which looks the same, with both file sizes shown.

Image Optimization

Compress Image to 150KB

Compress to 150KB

Target loaded automatically

Reduce any JPG, PNG or WebP photo to 150KB online for free. The compressor automatically searches for the highest quality that still fits under 150 kilobytes, so your image stays as sharp as possible while meeting the 150KB upload limit. Files are processed on secure servers and auto-deleted afterwards.

Forms and portals capped at 150KB
Email or message attachments near a 150KB limit
Smaller web images with a measured size result

Compress to 150KB

Target loaded automatically

Drop an image — set your target KB and get a smaller file that still looks sharp

Upload an image

Drop a file here, or click to browse

Supported formats include JPG, PNG, GIF, WebP, SVG, HEIC, AVIF, TIFF, RAW, PSD. Maximum file size: 20 MB.

Compressing images to 150 KB for web pages and blog posts

A per-image budget such as 150 KB keeps an article with many photos quick to load on a phone. The number that matters most is the display width: a photo shown 1,200 pixels wide in a blog layout gains nothing from 4,000 pixels in the file, and those extra pixels push quality down, or trigger an automatic shrink, to fit the budget.

So resize to the width your theme displays first, then compress here. The target is preset to 150 KB with JPG output. If your site serves WebP, switching Output Format to WebP often fits more detail into the same budget, and you can convert existing JPGs to WebP when changing a whole library.

Check the result on a high-density laptop or phone screen, where soft detail is easiest to see, and look at smooth areas such as sky and skin for banding. Keep the original file as a master. Updating a whole gallery? Premium batch mode applies the 150 KB target to up to 60 images per run and returns a ZIP.

Image OptimizationPreset loaded automatically

Set up for Compress Image to 150KB

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Prepared settings

Starting point: One JPG, PNG, WebP, or GIF image; Upload is the only required setup step; the page opens with the target already active.
Prepared target: 150KB file-size goal; The compressor searches for the highest usable quality that fits the 150KB goal.
Output setup: JPEG selected for size efficiency; Quality remains adjustable, and another supported output format can still be chosen before processing.
Review rule: Confirm the result is at or below 150KB; Compare the preview, dimensions, and measured output size before using the file in a strict upload form.

Best-fit uses

Forms and portals capped at 150KB
Email or message attachments near a 150KB limit
Smaller web images with a measured size result

Frequently asked questions

How do I compress an image to 150KB?: Upload your photo and the tool auto-targets 150KB by lowering quality just enough to fit. You can fine-tune the slider afterwards; the live size readout shows when you are under 150KB.
Will compressing to 150KB reduce quality?: We keep the highest quality that still fits 150KB. For typical photos 150KB keeps good detail; very large originals may soften slightly, which is expected at this size.
What formats can I compress to 150KB?: JPG, PNG, WebP and GIF inputs are supported. JPEG output usually reaches 150KB with the best quality-to-size balance.
Is the 150KB compressor free and private?: Yes. It is free to use, and uploads are processed on secure servers and auto-deleted after processing.

What you can do with Image Compressor

Review the main capabilities before you begin.

Compress JPG, PNG and WebP to an exact KB size
Hit a target like 20KB, 50KB or 100KB
Shrink images without losing visible quality
Meet upload limits for forms and portals
Speed up your website with lighter images
Bulk-compress many photos at once

Use this tool

Settings reference

Available controls for Image Compressor.

Mode

Single image / BatchPresets: Switches between compressing one photo with a live preview and queueing many images to compress with the same settings and download together as a ZIP; batch mode is a Premium feature.Options: Single imageBatch

Quality

Target file size (KB)Number input: Optional size budget in kilobytes (minimum 1, e.g. 100) that, when set, adjusts quality automatically — reducing dimensions if needed — to fit the budget and disables the quality slider.
QualitySliderRange: 10–100% · Default: 30%: Controls how strongly the image is compressed — drag toward 10% for a smaller file or toward 100% for better quality — and is ignored while a target file size is active.
Quick PresetsPresets: One-tap starting points that jump the quality slider to a named level, from High Compression at 30% to High Quality at 90%, so you can pick by name and fine-tune afterwards.Options: High Compression (30%)Medium (50%)Balanced (70%)High Quality (90%)

Format

Output FormatDropdown: Chooses the saved file type — JPEG suits photos, WebP gives the smallest files, PNG keeps transparency, GIF keeps animation — defaulting to JPEG, or GIF when a GIF is uploaded.Options: JPEG (Best for photos)WebP (Smallest size)PNG (Transparency support)GIF (Animation support)

Open this tool

Compress to a specific size

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