Bolt
api
File Upload Exceeds Size Limit - Large File Rejection
Users get errors when uploading files larger than limit. Upload fails even though file size seems reasonable.
Errors: 'payload too large', '413', or upload hangs indefinitely.
Error Messages You Might See
413 Payload Too Large
Request entity too large
File exceeds maximum upload size
Upload failed - out of memory
Common Causes
- Server body size limit too small (default often 1MB)
- Client-side validation but server doesn't enforce same limit
- No chunked upload for large files
- Streaming upload not configured
- Temporary file storage full
How to Fix It
Increase server limit: in Next.js middleware or server config
Add client validation: show error before uploading if file too large
For large files: implement chunked upload (send 1MB chunks, reassemble server-side)
Use multipart/form-data with streaming: don't load entire file in memory
Monitor disk space: ensure temp storage has enough room
Real developers can help you.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
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Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
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rayush33
JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems
Prakash Prajapati
I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
Matt Butler
Software Engineer @ AWS
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
What's reasonable file size limit?
Small files: 5-10MB. Medium: 50-100MB. Large: use chunked upload
How do I implement chunked upload?
Split file into 1MB chunks client-side. Upload each chunk. Server reassembles when all received
Should I validate size client-side?
Yes for UX (error before upload). Also validate server-side for security