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Resize an image to 150×150 pixels

Resize an image to 150 × 150 pixels for a thumbnail, a video watermark or a small icon. The editor opens on the square; crop tight or fit the whole picture, and Save exports exactly 150 × 150. Part of the image resizer.

Output format
– / –

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JPEG · PNG · WEBP · AVIF · HEIC · up to 50 at once · max 30 MB each

HEIC
PNG
JPEG
AVIF
WEBP
Advanced settings
SmallerAutoBetter

Auto tunes each image.

A hard cap for the number your form demands.

A floor for forms that refuse small files.

Max resolution

Empty side keeps the ratio. Never enlarges.

Presets

Every named size, one editor

The same editor, the size already pressed. Pick the document or the platform.

Pixel sizes

Image resizer

The size, exactly

150 × 150 px, in every unit a form states it in

Millimetres and inches at 300 DPI, the print resolution the portals assume.

What Save exports

Pixels
150 × 150 px
Millimetres
12.7 × 12.7 mm
Inches
0.5 × 0.5 in
Ratio
1:1
Fit
cropped to the shape
Metadata
EXIF and GPS stripped

The rules, with their sources

WordPress thumbnail
150 × 150 by default, cropped to exact size
WordPress Developer Resources, populate_options()
YouTube video watermark
at least 150 × 150, square, under 1 MB
YouTube Help, Manage your channel branding

Each rule as it read on its source when we checked it in September 2026. The source’s own page wins over this card.

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Measured

The reference image at this size, measured

SourcePresetFitResultDimensions
photo.jpg (576.8 KB)150 × 150crop5 KB150×150

Source: photo.jpg, 576.8 KB at 1920×1280, through the preset this page opens on (the centre cropped to the ratio and scaled to the size), then the engine at its defaults. The row is the real output.

Every byte count is the size of the actual file our engine produced from the named source, the same bytes you would download, not an estimate. The reference photo is one of our own photographs, an iguana on a branch, and the camera photo is a real one too. Drop your own file into the tool above to rerun any of them. How we measure names the sources and the settings.

Answered

What is 150 × 150 used for?

A thumbnail and a watermark: 150 × 150 is the thumbnail WordPress makes of every upload and the smallest watermark YouTube takes.

Where 150 × 150 is asked for: WordPress thumbnail, YouTube video watermark. Each rule and its source are on the page.

WordPress sets its default thumbnail to 150 by 150 pixels with “Crop thumbnail to exact dimensions” on, so every image you upload gets a square copy named with its size. The watermark YouTube lays over your videos, the small logo in the corner, must be at least 150 × 150 pixels, square and under 1 MB. For a profile photo the size falls short: LinkedIn refuses anything under 400 × 400 and a Google Business Profile photo must be at least 250 × 250.

Answered

Why does WordPress make 150 × 150 copies of my images?

Because 150 × 150 is WordPress’s default thumbnail, cropped to exact size.

What WordPress saves for one 4000 × 3000 upload with its default sizes: photo-150x150.jpg, the thumbnail, cropped to exact size; photo-300x225.jpg, the medium copy, 300 at most; photo-1024x768.jpg, the large copy, 1024 at most. Settings > Media sets all three.

WordPress writes the thumbnail size into its core defaults, 150 wide, 150 tall, cropped, and cuts it from the middle of each picture you upload. It names every copy with a width x height suffix, which is where a file like photo-150x150.jpg comes from. You change the size under Settings > Media. Make your own 150 × 150 here when the subject sits off-centre, since WordPress crops the middle, or when a form asks for exactly this size.

Answered

How do I resize an image to 150 × 150 without stretching it?

Crop it or fit it, the two things the Crop / Fit switch does, and never the third.

A 3:2 photo and two ways to make it 150 × 150: Crop keeps a 1:1 slice, 67% of its width; Fit keeps the whole picture at 150 × 100 with a 25 pixel band of fill above and below.

Our reference photo is 3:2 and 150 × 150 is square, so the sides give. Crop keeps the middle 67 percent of the photo’s width and all of its height; drag the frame to the face or the product first. Fit keeps the whole picture: it sits 150 × 100 inside the square, with a 25-pixel band of fill above and below, white unless you pick a colour from the well.

Stretching would pull the picture to 150 × 150 by squeezing everything in it, and the editor does not offer it. The Custom size box shows the output in pixels the whole time, so the number you see there is the file Save writes.

Answered

Does resizing to 150 × 150 lose quality?

Not the detail the frame can show: scaling down averages neighbouring pixels, and edges stay clean.

Our 1920 × 1280 reference photo and 150 × 150 to one scale: cropped to 1:1 it is 1280 × 1280, which the export scales down to 12% to reach 150 × 150.

Our 1920 × 1280 reference photo, cropped to 1:1, is 1280 × 1280; the export scaled it to 12 percent of that, to 150 × 150, in one pass: 5 KB as a JPEG. Detail finer than one pixel of the new size averages away, which is the point of a smaller file. Resize once, from the original; a copy resized twice loses a little more each time.

Answered

Which format is smallest for a 150 × 150 image?

AVIF, at 3 KB for our reference photo at 150 × 150.

The reference photo at 150 × 150 in four formats, measured: AVIF 3 KB, WebP 4.5 KB, JPEG 5 KB, PNG 17.2 KB. AVIF is the smallest.

The same 150 × 150 crop came to 4.5 KB as WebP and 5 KB as JPEG; as PNG it took 17.2 KB. PNG costs the most on a photo even palette-optimised, as it is at Auto; choose it for a logo, an icon or a screenshot with sharp edges or a transparent background, which JPEG blurs and cannot keep. With Quality at 100 in Advanced settings the PNG is truecolour and keeps every pixel, at a larger size. Pick the format above the drop zone before you save; Auto keeps the source’s.

Reference file576.8 KBphoto.jpg
AVIF3 KBtransparency
WebP4.5 KBtransparency
JPEG5 KBno transparency
PNG17.2 KBtransparency

Source: photo.jpg, 576.8 KB at 1920×1280, cropped to 150 × 150 the way the editor does it. Measured before 5 October 2026: the editor's JPEG at 0.92, then the engine's four formats at their defaults.

Be sure first

When 150 × 150 is the wrong size

  • A profile photo on X or LinkedIn?

    400 × 400 is what X recommends and LinkedIn's minimum; the 400 × 400 page opens on it.

  • A Google Business Profile photo?

    Google's minimum is 250 × 250 and it recommends 720 × 720; type the larger size into Custom size.

  • A WordPress thumbnail?

    WordPress makes the 150 × 150 copy itself when you upload; change it under Settings > Media rather than uploading a small file.

Related: Convert to 400x400 pixels · Resize image to 500x500 · Resize image to 64x64 · Crop image to square · Compress image to 20 KB

FAQ

Questions, answered

The size is already pressed above. One drop settles most of these.

How do I resize an image to 150x150 pixels?

Drop the image into the tool above. The editor opens on Crop with 150 × 150 in force and the square drawn on the picture. At this size crop tight, so the face or the logo fills the square, then Save. The export is exactly 150 × 150 pixels, compressed, and never stretched. Fit keeps the whole picture instead, on white.

How do I change the 150x150 thumbnail size in WordPress?

Open Settings > Media in the WordPress dashboard and change the Thumbnail size's width and height. The box 'Crop thumbnail to exact dimensions' decides whether the copy is cut square or kept in proportion. New uploads get the new size; images you uploaded before keep the copies WordPress already made.

Why do my 150x150 thumbnails look blurry?

Usually because the theme shows them larger than 150 pixels, so the browser enlarges them; one WordPress.org forum thread found 150 × 150 files displayed at 257 × 257. Raise the thumbnail size in Settings > Media, or choose a larger image size in the theme or the block. Enlarging the 150 × 150 file itself cannot add detail.

Is 150x150 too small for a profile picture?

For most networks, yes. LinkedIn refuses profile photos under 400 × 400, X recommends 400 × 400, and a Google Business Profile photo must be at least 250 × 250. 150 × 150 suits a thumbnail or a watermark. For a profile photo, the 400 × 400 page makes the size X and LinkedIn name.

What size is a YouTube watermark?

At least 150 × 150 pixels, square, and under 1 MB, by YouTube's channel branding help page. This page exports exactly 150 × 150: crop tight so the logo fills the square, and pick PNG above the drop zone if the logo has a transparent background. Then upload it in YouTube Studio's branding settings.

How many KB is a 150x150 image?

Very few. Our reference photo at 150 × 150 came to 5 KB as a JPEG, 4.5 KB as WebP, 3 KB as AVIF and 17.2 KB as PNG. At this size every format fits under a 20 KB form limit, and YouTube's 1 MB watermark cap is 58 times even the largest of them.

How do I make a 150x150 photo under 20 KB for an online form?

Set Max file size to 20 KB in Advanced settings before you save, and the engine keeps the file under it. At 150 × 150 the cap rarely has work to do: our reference photo weighs 5 KB as a JPEG. It matters most when the source is a large PNG screenshot. Check the form's own wording for the format it takes.

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Page updated

Exactly 150 × 150, cropped tight

The square is set above. Drop the image, crop it so the subject fills the square, and Save exports 150 × 150 pixels.

Resize to 150×150