blinkimg

Resize an image

Drop an image and set the exact output size. Type a width and height with a ratio lock, or one-tap a preset like Instagram story or OG image. The resize happens at full source quality, and the saved file comes out compressed: the two jobs a "resize for web" search actually wants done.

Output format
– / –

Drop images or browse

JPEG · PNG · WEBP · AVIF · HEIC · max 30 MB

HEIC
PNG
JPEG
AVIF
WEBP
Advanced settings
SmallerAutoBetter

Auto tunes each image.

A hard cap for “under 50 KB” portals.

Max resolution

Empty side keeps the ratio. Never enlarges.

A real resize, before and after

Original, 184 KBOriginal · 184 KB
Resized to 400px, 26 KBResized to 400px · 26 KB
−86%
This is the reference photo actually resized by our engine. Drop your own image and do the same.

How it works

Three steps, no account. The file leaves smaller than it arrived.

  1. Drop

    Drop an image and the editor opens on it instantly.

  2. Resize

    Type an exact width × height (ratio-linked) or tap a preset.

  3. Save

    The resized file comes out compressed and ready to download.

Five ways to say 'smaller': one tool for all of them

Every resize request is one of five: exact pixels ("1920×1080"), a bound ("nothing wider than 1600"), a percentage ("half size": just halve the pixels), a print size ("10×15 cm at 300 DPI", which is 1181×1772 px), or a file size ("under 100 KB"). Other resizers split these across separate pages and tools. Here they are two fields in Advanced settings. Max resolution covers the first four, Max file size nails the fifth, and they compose in a single pass.

Dimensions are the biggest size lever there is

Halving both dimensions quarters the pixel count, which dwarfs anything a quality slider can do. We measured this on the same source photo:

TreatmentSizevs source
Full size, compressed74.2 KB−95%
Resized to 400px wide10.8 KB−99%

Source: photo.png, 1382.4 KB PNG. JPEG output at Auto quality.

The practical rule: pick the dimensions the destination actually displays, then let compression do the rest. A 4000px photo in a 400px avatar slot wastes 99% of its bytes.

How these numbers are measured: every byte count on this page is the size of the actual encoded file our engine produced from the named source image. Those are the same bytes you would download, not an estimate or a best case. Rerun any of them yourself: drop your own file into the tool above and the meter reports your real result.

Print sizes: the cm-to-pixels arithmetic, done for you

Printers think in physical units at a density; images are just pixels. The bridge: pixels = inches × DPI (or cm ÷ 2.54 × DPI). At the standard 300 DPI: a 4×6" print needs 1200×1800 px, 10×15 cm needs 1181×1772 px, A4 needs 2480×3508 px, and a 2×2" passport photo needs 600×600 px. Enter the pixel numbers as Max resolution. One honest warning the print shops won't give you: if your original has fewer pixels than the target, print smaller. Upscaling to hit a DPI number adds blur, not detail.

The social sizes, as content and as one-click presets

Instagram post 1080×1080 (portrait 1080×1350, story/reel 1080×1920) · YouTube thumbnail 1280×720, under 2 MB · Facebook cover 820×312 · X header 1500×500 · LinkedIn banner 1584×396 · Open Graph preview 1200×630. These same numbers live as one-tap ratio presets in the crop tool. Crop to the ratio there, and the save comes out resized and optimised in the same pass.

Resizing to a KB number: stop guessing dimensions

"Resize image to 50 KB" is really a compression problem wearing a resize costume, and guess-and-check dimensions is the slow way to solve it. Set Max file size instead: the engine searches quality (and, when needed, dimensions) for the best image that fits under your cap, and never overshoots. Our 188.3 KB reference landed at 49.6 KB against a 50 KB cap. For portals that also demand exact pixels, set both fields. One pass passes both validators.

When resizing is the wrong tool

  • The image is the right size but the file is too big? That is compression, not resizing. Compress JPEG or Compress PNG will shrink bytes without touching dimensions.
  • You want a different framing, not a smaller photo? That is cropping. Cut the region you want at full detail, then resize if needed.
  • You need it BIGGER? Resampling cannot invent detail; our tool refuses to upscale rather than deliver blur. AI upscaling is a different craft.

Questions, answered

Short answers specific to this tool. Try it above and the editor settles the rest.

Does resizing an image reduce its quality?
No, not if you downscale once: that is the safest edit in imaging. Detail averages away smoothly and the result looks crisp at the new size. Quality problems come from upscaling (inventing pixels) or repeated resize-save cycles. Resize once, from the original, to the size you need.
How do I resize an image to exactly 50 KB or 100 KB?
Use the Max file size setting rather than guessing dimensions: it hard-caps the output at your number, never overshooting. Dimensions and size interact, and the tool searches that space for you. Our 1382.4 KB reference dropped to just 10.8 KB at 400px wide.
What is the difference between resizing, cropping and compressing?
Resizing scales the whole image to new dimensions. Cropping cuts a region out at full detail. Compressing re-encodes the same pixels in fewer bytes. They compose: crop to the subject, resize to the destination, and every save compresses automatically.
How do I resize without losing quality?
Three rules cover it: only downscale (never enlarge), resize from the original rather than from an already-resized copy, and do it in one pass. Our resize never upscales by default and re-encodes once at high quality. The compare view shows the result before you commit.
Can I resize many images at once?
Yes. Set Max resolution (and optionally a size cap) in Advanced settings, then drop up to 50 images. Every one resizes to the same bounds and downloads as one ZIP. Several popular resizers cap free batches at 3 files. Ours is 50, free, no signup.
How do I resize in centimetres or inches for printing?
Convert physical size to pixels: centimetres ÷ 2.54 × DPI. A 10×15 cm print at 300 DPI needs 1181×1772 px; a US 4×6" needs 1200×1800 px. Enter those pixels as the Max resolution. If your original has fewer pixels, print smaller rather than upscaling.
What size should social media images be?
The stable 2026 numbers: Instagram post 1080×1080 (portrait 1080×1350, story 1080×1920), YouTube thumbnail 1280×720 under 2 MB, Facebook cover 820×312, X header 1500×500, LinkedIn banner 1584×396. The editor's crop presets carry these exact ratios built in.
Can I make an image larger without it going blurry?
Not with resampling alone. Enlarging spreads the same information over more pixels, which reads as blur. That is why our resize never upscales: a bound larger than the image leaves it untouched. True enlargement needs AI upscaling, a different tool with different trade-offs.
Does resizing strip EXIF and GPS data?
Yes, by default. Saving strips EXIF: GPS location, capture time, device model. That is the safe choice for anything you post publicly. Photographers who need capture dates can keep metadata with the "Keep EXIF metadata" checkbox in Advanced settings.
Can I resize a HEIC photo from my iPhone?
Yes, drop the HEIC straight in. We decode it server-side, resize it, and return a format everything opens (JPEG by default, or pick WebP/AVIF for the web). No pre-conversion step, no codec installs, up to 50 iPhone photos at a time.
What dimensions do exam and government forms require?
Most portals cap both dimensions and bytes. Common numbers: 200×230 px photos and 140×60 px signatures at 20–50 KB for Indian exam portals, and 600×600 px for US visa photos. Set both Max resolution and Max file size, and the output passes both validators in one pass.
Is this free, and what happens to my photos?
Free, no signup, no watermark, a 300-image daily allowance. And we keep nothing: files are processed and wiped automatically, never archived, never used for anything else. The resized copies you download are yours. The uploads are gone.

More tools

Everything runs on the same engine: edit, compress, and convert in one place.

Ready when your file is

Drop it in above. The editor opens on it instantly, and Save hands back an optimised copy.

Resize an image