Choose a file
Select a photo, PDF or DOCX from your phone or computer. It remains inside your browser.
Private on your device
Prepare files
for online forms.
Paste the requirement in plain language. WhatTheFile resizes photos, compresses PDFs and converts DOCX to PDF privately on your device.
1 Add your file
Understood:Add a file-size rule, dimensions or format
Try an example:
Stays on your device
Your file is never uploaded
Ready for the form
See understood requirements first
Free to use
No account, cookies or payment
How it works
Prepare a file in three private steps
Paste the requirement
Enter instructions such as “under 100 KB, 600 × 600 pixels, JPG”.
Check and download
See each understood requirement pass or fail before downloading the locally prepared file.
Popular guides
Help for the upload problem in front of you
Photo size
Reduce a photo to under 100 KB
Make a smaller copy while keeping the original safe.
Read guide →SignaturesCompress a signature image
Meet a strict file-size limit without losing a stroke.
Read guide →File formatsConvert PNG to JPG for a form
Understand what changes and check the result.
Read guide →TroubleshootingWhy is my photo still being rejected?
Check the rules a file-size tool cannot see.
Read guide →Dedicated tools
Single-purpose file tools
MD→DOCX
Markdown to Word DOCX
Convert Markdown notes and docs into formatted Word documents privately.
DOCX→PDF
Word DOCX to PDF
Convert Word documents directly to PDF without server uploads.
PDF→PDF
Compress PDF
Reduce PDF file size locally to fit portal upload boundaries.
IMG→IMG
Resize & Crop Image
Resize application photos to exact pixels with interactive crop preview.
Built for real form requirements
Resize photos, compress PDFs and convert DOCX privately
Use WhatTheFile for job applications, exams, passports, visas and other forms that specify a file type, maximum size or exact image dimensions.
- Reduce image file sizeCompress JPG or WEBP toward KB and MB limits.
- Resize without a surprise cropWhen part of an image must be removed, check and reposition the crop before preparing it.
- Convert image formatPrepare JPG, PNG or WEBP downloads.
- Compress a PDFReduce image-based PDFs locally and verify the final size.
- Convert DOCX to PDFPrepare a private, image-based PDF and check every page.
Common questions
Photo, PDF and DOCX preparation FAQ
How do I reduce a photo to under 100 KB for an online form?
Choose the photo, enter a requirement such as “JPG under 100 KB”, then prepare and download it. JPEG and WEBP quality is reduced locally until the result approaches the requested limit.
Does WhatTheFile upload or store my photo?
No. Current image processing happens inside your browser. The selected photo and prepared download are not sent to WhatTheFile servers.
Can I resize a passport or application photo to exact dimensions?
Yes. Enter pixel dimensions such as “600 × 600 JPG”. If the required shape would cut away part of the photo, a private crop preview opens so you can reposition it before preparing the file.
Which image formats are supported?
WhatTheFile accepts JPG, PNG, WEBP, HEIC and HEIF images. It produces JPG, PNG or WEBP output. JPG or WEBP is usually best when a strict file-size limit matters.
Can WhatTheFile compress PDFs?
Yes. PDF compression runs inside your browser by converting pages to compressed images. This can remove searchable text, links, forms and digital signatures, so check the downloaded PDF before submitting it.
Can I convert a Word DOCX file to PDF?
Yes. Enter a requirement such as “must be PDF”. The DOCX is converted on your device. DOCX compression is not supported, and complex layouts may differ, so check every page of the PDF.