Slow Bundle Build Time - Build Takes Too Long
Your Bolt app takes minutes to build even with small changes. Development speed suffers with slow hot reload and rebuild times.
npm run dev or npm run build takes excessive time (over 30 seconds for simple changes).
Error Messages You Might See
Common Causes
- Too many dependencies or heavy packages being bundled
- Webpack/Next.js not optimized - missing splitting or lazy loading
- Large image assets in bundle instead of optimized
- Development mode compiling all unused code
- TypeScript checking every file on each change
How to Fix It
Analyze bundle: npm run build -- --analyze to see what's large
Remove unused dependencies: npx depcheck
Use dynamic imports for heavy libraries: import('heavy-lib').then(mod => mod.default)
Enable SWC minifier in next.config.js for faster builds
Split code: ensure lazy loading of routes and components
For dev: use --turbo flag if using Next.js 13+
Real developers can help you.
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.
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
Focused on performance, clean architecture and shipping fast.
Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools.
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
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 : )
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
legrab
I'll fill this later
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 a good target build time?
Dev mode cold start: <10s. Hot reload: <2s. Full build: <20s
How do I find what's slowing builds?
npm run build -- --analyze or npm run build --profile to see bottlenecks
Does using less packages help?
Yes significantly. Each dependency adds parsing time. Prefer lighter alternatives or inline small utilities