Compress Image to 150kB

Yes, for anything shown on a screen. A 600 × 800 px or 800 × 800 px headshot at 150 kB keeps a high JPEG quality setting, so skin tones, hair and the edge of a collar stay clean. That covers HR onboarding systems, intranet staff cards, job-site profiles and company team pages, where the photo is rarely displayed wider than about 400 px. LinkedIn, for comparison, accepts files up to 8 MB but needs only 400 × 400 px, so 150 kB is far more than it ever shows. The size is not enough for print or a large hero banner; keep the original for those.

Few forms say exactly 150 kB; most publish a window that 150 kB sits inside. The 2026 NTA bulletins for JEE Main, NEET UG and CUET UG and the UGC-NET December 2025 bulletin all ask for a 10–200 kB JPG photograph. GATE 2026 allows 5–600 kB inside a 200 × 260 to 530 × 690 px frame. Among recruiters, the RRB Chennai FAQ for CEN 01/2025 sets 100–150 kB and the UPSC CAPF 2026 notice 20–200 kB. State universities and counselling portals set their own figures and revise them yearly, so treat the number beside the upload field as final and check the current notification before you submit.

At the same dimensions, 150 kB gives the encoder half as many bytes again, and it shows in three places: smoother gradients in skin and sky, sharper edges around hair, spectacles and small text, and fewer 8 × 8 block artefacts in flat backgrounds. For a 600 × 800 px portrait the 100 kB version is already good and the gain is subtle; for a document photo or a wider 1000 px image the extra bytes are easy to see. If a form allows either, choose 150 kB for photos with fine detail and 100 kB when a slow connection or a stricter neighbouring form matters more.

Yes. We stop at or just under 150,000 bytes. A portal that measures kilobytes as 1,024 bytes reads that file as about 146 KB, and one that uses 1,000 bytes reads it as 150 KB or a little less, so you are under the limit either way. The result panel shows the exact byte count, and the download carries the size in its name, for example photo-148kb-mb2kbsizer.jpg, so you can confirm it before you upload. If the portal also sets a minimum, such as the 100 kB floor in some railway forms, check that the count is above it as well.

Not separately; the tool does both in one pass. Choose exact width × height and enter the portal's pixel size: 413 × 531 px matches the common 3.5 × 4.5 cm at 300 dpi, and GATE publishes its own range of 200 × 260 to 530 × 690 px. The tool centre-crops to those proportions, never stretches, and then searches for the quality that lands at or under 150 kB. Frame the shot with the head centred and filling most of the height before you upload, because the crop keeps the middle of the picture.

Three steps, usually under a minute.

1. Add your photo. Drag it onto the upload box, tap browse to pick it from your gallery, or paste it from the clipboard with Ctrl/Cmd + V.
2. Set the target. Type a number and choose kB or MB, or tap a quick chip from 20 to 350 kB. On a preset page the field is already filled in. If a form demands exact pixel dimensions, set them in the resize option.
3. Press Compress, then Download. You get a before/after slider, the output dimensions, the quality used and the exact byte count, so you know it will pass before you submit it.

You can upload JPG, PNG, WebP, GIF (the first frame is used), BMP and AVIF, provided your browser can decode the file. HEIC photos from an iPhone open in Safari and other browsers with HEIC support; elsewhere the tool explains how to set the camera to Most Compatible so new shots are saved as JPG. Files up to 60 MB are accepted. For output, Auto gives a JPG in most cases and keeps WebP as WebP; you can also force JPG, WebP or PNG. PNG is lossless, so a PNG target is reached only by reducing dimensions, which is why JPG is the better pick for a small photo.

Strictly speaking, you never upload anything. When you choose a file, the browser reads it from your device and does the resizing and re-encoding in a background worker on that same device. No copy travels to our server or to anyone else's; the only thing our server sends you is the page. A useful side effect is that the browser rebuilds the image from its pixels alone, so EXIF data such as the camera model, the date taken and the GPS location is dropped from the output. That makes the compressed photo safer to share than the original you started with.

No. We have no image storage of any kind, because the file never reaches us in the first place. It sits in your browser's memory while you work, and the compressed version exists only on your device once you download it. Close or refresh the tab and both are gone. We keep no history, no gallery and no cache on our side, and we cannot see what you compress. Our web host records ordinary server logs, such as the time of a page visit and the browser used, but those cannot contain your pictures. For the full detail, read our privacy policy.

Mb2KbSizer is a free image and PDF compressor that runs inside your web browser. You pick a file, type the size you need, such as 100 kB, and it shrinks the file to land at or just under that number. Most people use it for upload forms that reject big files: exam registrations, passport and visa applications, job portals, bank KYC and college admissions. It is just as handy for lightening photos before you email them or put them on a website. There is a [single-image tool](/), a bulk compressor for up to 200 photos at once, and a PDF compressor, all built on the same no-upload principle.

Yes. Every tool on this site is free, and we intend to keep it that way. There is no sign-up, no premium tier, no daily quota and no watermark on the output. Compress one photo or three hundred; nothing counts against a limit. A few ads on the page pay for hosting. Because the heavy lifting happens on your own device rather than on our servers, each extra user costs us almost nothing, so there is no reason to charge. We do not sell an app, a plan or an API either, so you will never be nudged towards a paid version.

No installation is needed. Mb2KbSizer is a web page, so it works the moment it loads in current Chrome, Edge, Firefox, Safari or Samsung Internet on a phone, tablet or computer. Nothing is downloaded to your device except the page itself, and it does not ask for storage or camera permissions. If you use the tool often, you can add it to your phone's home screen from the browser menu and it will open like an app. It still needs an internet connection to load, though, so treat this as a shortcut rather than an offline program. There is no Play Store or App Store version.