Fix files that won't upload.
Resize, compress, flatten, and prepare files to meet a website's technical upload requirements — free, in your browser. Your files are processed on your device and are not uploaded to our server.
- Works in your browser
- Files stay on your device
- No account required
- Free to use
Choose your problem
Why it matters
Online portals reject files for mechanical reasons: over the size cap, wrong format, wrong dimensions, or an interactive form that must be flattened first. UploadFixer fixes those properties and verifies the result against the target before calling it done. For the exact published limits of specific portals — with official sources and verification dates — see the requirements directory. Browse the upload requirements directory.
Guides
- HIPAA Compliant File Upload Requirements for Medical Practices
Learn HIPAA requirements for medical file uploads: encryption, access controls, audit trails, and compliance best practices for your practice.
- What Makes a File Upload HIPAA Compliant?
Learn what makes file uploads HIPAA compliant: encryption, access controls, audit logging, and proper data disposal to protect patient information.
- What Is Upload Compliance and Why Does Your Business Need It?
Learn what upload compliance means for your business, why it matters, and how to handle customer data and documents safely.
- What Is Upload Compliance? A Guide for Business Owners
Understand upload compliance requirements for your business. Learn about data regulations, security best practices, and when to seek professional help.
- What Compliance Requirements Apply to Your Business File Uploads
Understand file upload compliance rules for your business. Learn about data protection, industry regulations, security standards, and best practices.
- GDPR Compliance for File Uploads: What Your Business Needs to Know
Learn how GDPR affects file uploads on your website. Understand legal requirements, data privacy best practices, and steps to ensure compliance.
- What Does HIPAA Compliance for File Uploads Actually Require?
Learn what HIPAA compliance for file uploads requires: encryption, access controls, audit logs, and more. Practical guidance for healthcare organizations.
- What Data Privacy Laws Apply to Your Business's Document Uploads?
Learn which US data privacy laws govern your business document uploads, from CCPA to HIPAA, and how to ensure compliance.
- Upload Compliance Checklist: 10 Items Every Business Should Review
Review these 10 essential compliance checks before uploading files to cloud storage, document management, or data systems.
- What Is Upload Compliance and Why Your Business Needs It
Learn what upload compliance means, why it matters for your business, and how to handle file uploads securely and legally.
- GDPR Compliance for Website File Uploads: What Businesses Need to Know
Learn GDPR requirements for file uploads: consent, storage, retention, and security. Protect user data and avoid compliance penalties.
- What Is HIPAA-Compliant File Uploading and Why Healthcare Practices Need It
Learn what HIPAA-compliant file uploading means, why healthcare practices must use it, and the key requirements to protect patient data.
- Why online portals reject your PDF (and how to fix each reason)
The six mechanical reasons portals reject PDF uploads — size caps, encryption, unflattened forms, wrong format, corruption, XFA — and the exact fix for each.
- How to compress a PDF for USCIS online filing (under the 12 MB limit)
USCIS online filing caps evidence uploads at 12 MB per file. Here's why PDFs blow past it and how to compress yours — in your browser, without uploading it.
- Why iPhone photos fail upload requirements (HEIC and wide color, explained)
HEIC format and Display P3 color are iPhone defaults that break upload forms. What each one is and the one-minute fixes.
- JPEG vs PNG for application uploads: which to choose
Photos → JPEG, text/screenshots → PNG, portal rules override everything — and why PNG can never hit a size cap.
- How to resize an image to exact pixel dimensions without distortion
Crop-to-fill vs fit-with-padding, why stretching is always wrong, upscaling limits, and why one-pass processing beats a chain of tools.
- How to reduce PDF size without making the text unreadable
Where PDF megabytes actually live, the right order of compression steps, and when page rasterization is (and isn't) an acceptable trade.
- The U.S. visa digital photo spec, explained technically
Square, 600–1200 px, JPEG, sRGB, under 240 kB — what each rule of the official U.S. visa photo spec means and why normal phone photos fail it.
- What a “flattened” PDF is — and how to flatten one in your browser
Flattening merges typed form values into the page so e-filing systems accept them. What it is, why courts require it, and how to do it in one step.
Requirement news
- USCIS publishes mandatory e-filing rule — more document uploads ahead
DHS's interim final rule (effective Aug 11, 2026) establishes a framework for USCIS to require e-filing of specified benefit requests — more supporting documents will need to meet the online system's technical upload rules.