Compress Image & PDF in KB

TecDroid Developer

About this app

Compress image and PDF files to the size limit an upload form asks for. Type "under 50 KB", a range like 20 to 50 KB, or exact pixels like 200 x 230, and Compress Image finds the sharpest result that fits. You see the real new size before you save, and your original photo stays as it was.

Made for online forms, job and college applications, email attachments and chat: a photo resizer, image compressor and PDF compressor that works to a number in KB or MB instead of a vague slider.

Compress image to a KB or MB limit
• Set a maximum in KB or MB, plus a minimum for ranges like 20 to 50 KB
• Safe KB counting: the file fits whether the form counts 1000 or 1024 bytes per KB
• The exact size of the real file shows before you save, and updates as you change the limit
• Pixels are lowered before quality is crushed, so faces and text stay readable
• Can't reach the size? The app tells you why and offers fixes, such as grey, smaller pixels or WEBP
• Already small enough? It keeps a copy of the original instead of making a bigger file

Resize photo to exact pixels, cm or inches
• Width, height, both or the long edge, in px, mm, cm or inches with a DPI value
• Fit inside, crop to fill with a frame you move, or add a plain or blurred border
• A cm / inch to pixel helper for forms that give a print size
• Before and after compare with zoom, on the result card or full screen

Paste the form's rule
Copy the upload rule from a form page, tap Read from text, and the app reads the size range, pixels, DPI and format for you. Nothing changes until you check it and tap Apply.

Photo, signature and document kits
• Form photo kit: crop to the asked size, fit the KB limit, save
• Signature kit: whiten the paper, darken the ink, crop to the signature, then fit the limit
• Document kit: crop the page, turn it grey, fit the limit
• Ready sizes you can edit: signature 10-20 KB, form photo 20-50 KB, passport photo 35 x 45 mm, 2 x 2 inch photo, email, chat and web sizes
• Search a size like "50 kb" or "200x230", and save your own presets

Reduce PDF size
• Compress a PDF under a limit such as 1 MB, then the app checks that the new PDF opens
• Keep text mode shrinks only the pictures inside, so text and links stay
• Make pages images mode shrinks more and says first that text can't be selected afterwards
• Opens password PDFs with the password you type, which is never saved
• Turn photos into one PDF under a size limit, in your order, on A4 or Letter pages

Batch compress photos
• Up to 500 photos with one size limit
• See each result, the reason any file couldn't fit, and retry those
• Save all as a ZIP, share all, or let the batch keep going in the background

Save, share and find it again
• JPG, WEBP or PNG; transparent images can stay transparent
• Photo details: keep all, remove the location, or remove all
• Rename the file, or switch on upload-safe names for strict portals
• Copies go to Pictures/Compress Image or a folder you choose; Saved lists every result to share or compare again
• Share a photo or PDF from any app straight into Compress Image
• Widgets, a Quick Settings tile and app shortcuts

Private and offline
Compressing runs on your phone and works without internet. There is no account and no file upload. The app needs no storage, photo or camera permission: you pick each file. Originals are never changed unless you turn on Replace original, which Android confirms every time.

Dark theme and 18 languages. Questions or a size that won't fit? Write to [e-mail].

What’s new

Welcome to Compress Image: make photos and PDFs fit any size limit in KB or MB.
• Type the limit, like 50 KB or 600x800, and get a file that fits
• Paste a form's rules and the app reads the size, pixels and format for you
• Photo, signature and document kits for online forms
• Before and after compare in full screen
• Compress PDFs, turn photos into a PDF under a limit, batch up to 500 photos
Your original stays safe. Works offline, no account.