Base44
storage
Image Gallery Thumbnails Not Generating or Displaying
Your Base44 app's image gallery shows broken thumbnail images, displays full-size images instead of thumbnails (causing slow page loads), or shows no images at all. The gallery page takes forever to load because it's downloading dozens of full-resolution images instead of optimized thumbnails.
Image galleries are a common feature in Base44 apps (product catalogs, portfolios, real estate listings) and broken thumbnails make the app feel slow and unprofessional. Users on mobile connections may not be able to load the page at all.
The issue may appear after uploading images in certain formats, after reaching a storage threshold, or when the image processing service can't generate thumbnails fast enough.
Error Messages You Might See
Image failed to load
net::ERR_NAME_NOT_RESOLVED for image URL
403 Forbidden when loading image from storage
Page load time exceeding 15 seconds on gallery
Common Causes
- No thumbnail generation configured — The app stores original images but no resized versions are created for gallery display
- Image URLs broken after migration — Storage bucket paths changed but image URLs in the database still point to old locations
- HEIC/WebP format not supported — iPhone photos in HEIC format or WebP images can't be processed for thumbnails
- Image component using wrong URL field — The gallery component references the wrong database field, showing null instead of the image URL
- CORS blocking image loading — Images stored on a different domain are blocked by browser CORS policy
How to Fix It
- Implement image resizing on upload — Generate thumbnails (300px wide) when images are uploaded, storing both original and thumbnail URLs
- Use image CDN transforms — If using a CDN, append resize parameters to the URL (e.g., ?width=300&quality=80) instead of storing separate thumbnails
- Verify image URLs in database — Check the actual URLs stored in your table. Open them directly in a browser to confirm they load
- Add lazy loading — Use loading='lazy' on gallery images so they only load when scrolled into view
- Convert uploaded images — Convert all uploads to JPEG or WebP format for consistent thumbnail generation
Real developers can help you.
Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
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
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 : )
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
Expertise:
💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
🖋️ Sharing insights through technical writing, blogging, and open-source contributions.
🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development.
🌟 Open source contributions on Github & StackOverflow for Flutter & Dart
🎖️ Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations.
Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization.
I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems.
My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**
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I'll fill this later
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
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.
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Why is my Base44 image gallery loading so slowly?
Your gallery is likely loading full-resolution images instead of thumbnails. Each image could be 3-10MB. Generate thumbnails (300px wide, 80% quality) and use those in the gallery grid, loading full images only when a user clicks to view details.
How do I fix broken image URLs after changing storage settings?
Export your table data, find-and-replace the old storage URL prefix with the new one, then re-import. For future uploads, verify the new storage configuration generates correct URLs.