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Reads the Requirements
Detects upload forms and scans for size limits, dimensions, and format requirements — "Max 2 MB," "JPEG only," "1920×1080 max."
Government portals, job sites, college applications — if a web form takes an image, FileThrough fits your file to it. Right inside the tab.
Every site has different rules. "File too large." "Must be JPEG." "Maximum 1920×1080." So you hunt for an image editor, open a new tab, upload your file to some random site, tweak settings you don't understand, download it, then come back and try again.
FileThrough reads the upload requirements straight off the page and fixes your file automatically. No editor, no extra tab, no guessing.
Three steps that happen automatically
Detects upload forms and scans for size limits, dimensions, and format requirements — "Max 2 MB," "JPEG only," "1920×1080 max."
Compresses images, converts formats (PNG→JPEG, HEIC→JPG), and resizes dimensions — all in your browser, nothing leaves your computer.
Replaces your oversized file with the optimized version and uploads it. You don't lift a finger beyond clicking "Upload."
Tested on thousands of real upload forms
Passport applications, visa forms, permit uploads — strict size limits, usually JPEG-only.
LinkedIn, Indeed, company career portals — resume uploads, profile photos, portfolio samples.
Common App, UCAS, university portals — transcripts, essays, recommendation letters.
Twitter, Facebook, Instagram — profile pictures, post images, story uploads.
eBay, Etsy, Amazon seller — product photos, listings, storefront images.
Healthcare portals, insurance claims, legal document uploads.
Image compression, format conversion, and resizing run locally using WebAssembly. Nothing is uploaded to our servers or anyone else's.
Every processed image has location data, camera info, and timestamps removed. Your photos won't reveal where you live, what device you use, or when you took them.
We don't log what files you process, what sites you visit, or how you use the extension. Zero trackers.
Once installed, FileThrough doesn't need an internet connection. Process files on a plane, train, or anywhere.
Every line of code is public on GitHub. Security researchers and developers can verify our privacy claims.
"I was uploading documents for a visa application and kept getting 'file too large' errors. FileThrough fixed it automatically — didn't even realize it was working until the upload succeeded."
"Before FileThrough I'd screenshot my phone pics, upload to TinyPNG, download, then upload to LinkedIn. Now it just works. Saves me 5 minutes every time I post."
"College application portals are the worst. Different size limits on every form. FileThrough read the requirements right off the page and handled it. Absolute lifesaver during application season."
Works automatically on these platforms and thousands more
Join thousands who never see "file too large" again
Install FileThrough — Free ForeverNo credit card. No sign-up. No tracking.