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
413 Payload Too LargeRequest entity too largeFile exceeds maximum upload sizeUpload failed - out of memory

Common Causes

  1. Server body size limit too small (default often 1MB)
  2. Client-side validation but server doesn't enforce same limit
  3. No chunked upload for large files
  4. Streaming upload not configured
  5. 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.

Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions. Anthony Akpan Anthony Akpan Developer with 8 years of experience building softwares fro startups Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields Taufan Taufan I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms. Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact. Richard McSorley Richard McSorley Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures. Matthew Jordan Matthew Jordan I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job. Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) Basel Issmail Basel Issmail ’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems. My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale. In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals. I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software. Kingsley Omage Kingsley Omage Fullstack software engineer passionate about AI Agents, blockchain, LLMs. Costea Adrian Costea Adrian Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.

You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.

Get Help

Frequently 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

Related Bolt Issues

Can't fix it yourself?
Real developers can help.

You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.

Get Help