Submission Guidelines
Everything you need to know before submitting a product to our marketplace.
Overview
We maintain high standards to ensure every product on Gambolthemes Marketplace delivers real value to buyers. These guidelines will help you prepare a submission that meets our quality bar and gets approved smoothly.
Our review team evaluates every submission manually. The typical review takes 1–5 business days depending on complexity.
Submission Process
Prepare Your Files
Package your product with all required files, documentation, and preview images.
Create the Listing
Fill in product details — title, description, tags, category, pricing, and upload your files.
Submit for Review
Our team will review your submission against quality guidelines and compatibility checks.
Approved or Feedback
If approved, your product goes live. If not, you'll receive detailed feedback to resubmit.
Quality Standards
All products must meet these minimum standards to be accepted:
Design & Aesthetics
- Clean, modern, and professional design that follows current trends
- Consistent use of colors, typography, and spacing throughout
- Well-organized layout with clear visual hierarchy
- Responsive design that works on desktop, tablet, and mobile devices
Code Quality
- Clean, well-structured, and commented code
- Valid HTML5, CSS3, and JavaScript with no console errors
- Optimized assets — minified CSS/JS for production, compressed images
- Cross-browser compatibility (Chrome, Firefox, Safari, Edge)
- No deprecated functions, frameworks, or libraries
Accessibility
- Proper use of semantic HTML elements
- Images must include alt attributes
- Sufficient color contrast for readability
- Keyboard navigable interactive elements
File Requirements
Your upload must be a single ZIP file containing the following:
| Item | Status | Details |
|---|---|---|
| Main product files | Required | Source code / design files ready for use |
| Documentation | Required | Setup guide, usage instructions (HTML or PDF) |
| Preview images | Required | Thumbnail (590×300), screenshots, feature images |
| Changelog | Recommended | Version history and updates log |
| License file | Recommended | Third-party library licenses and credits |
| PSD / Figma source | Optional | Design source files for templates/themes |
Maximum upload size is 256 MB. If your product exceeds this, contact support before submitting. Do not include unnecessary files like .DS_Store, node_modules, or .git folders.
Product Listing
Your listing page is the first impression buyers get. Make it count.
Title
- Keep it concise and descriptive (e.g., "Developer Portfolio — Responsive HTML Template")
- Avoid keyword stuffing, excessive capitalization, or special characters
- Do not include version numbers in the title
Description
- Start with a clear summary of what your product is and who it's for
- List key features with bullet points
- Include technical details: technologies used, browser support, etc.
- Mention any dependencies or requirements
- Do not include links to external sites or promotional content
Tags & Category
- Choose the most relevant category for your product
- Add 5–15 relevant tags to improve discoverability
- Use lowercase, specific tags (e.g., "portfolio", "dark-theme", "bootstrap-5")
Pricing
- Set a fair price that reflects the quality and scope of your product
- Consider the Regular and Extended license pricing tiers
- Research comparable products on the marketplace for benchmarking
Review Process
Every product goes through a thorough review before being published. Here's what our team evaluates:
- Design quality — Is the design professional, modern, and polished?
- Code standards — Is the code clean, valid, and well-organized?
- Functionality — Does everything work as described with no errors?
- Documentation — Is there a clear setup guide and usage instructions?
- Uniqueness — Does the product bring something new vs. existing items?
- File structure — Is the package organized and free of unnecessary files?
Reviews typically take 1–5 business days. Complex products (plugins, app templates) may take longer. You'll be notified via email once a decision is made.
After Review
If your product is approved, it goes live immediately and becomes available for purchase. If it's soft-rejected, you'll receive specific feedback to address and can resubmit. A hard-rejection means the product doesn't meet our quality standards — but you can submit an entirely different or significantly improved version.
Why Products Get Approved
Products that get approved quickly share these qualities. Use this as a benchmark for your submission.
✓ Professional Design Quality
- Pixel-perfect layouts with consistent spacing, alignment, and proportions
- Modern, trend-aware aesthetics — not outdated or generic-looking
- Thoughtful color palette with proper contrast and visual balance
- Typography hierarchy that guides the user's eye naturally
✓ Clean & Well-Structured Code
- Semantic HTML with logical structure and proper nesting
- Modular CSS/SCSS — organized, no redundant or conflicting rules
- JavaScript that is efficient, error-free, and doesn't rely on deprecated APIs
- Follows industry coding standards and best practices (W3C valid)
✓ Fully Responsive & Cross-Browser
- Fluid layouts that adapt from 320px mobile to 2560px+ ultrawide
- Touch-friendly interactions on tablets and mobile devices
- Tested and working on Chrome, Firefox, Safari, and Edge
✓ Complete Documentation
- Step-by-step setup guide that a beginner can follow
- Feature explanations, customization options, and FAQ section
- Credits and attribution for all third-party resources used
✓ Unique Value Proposition
- Offers something new — a fresh concept, niche, or innovative approach
- Not a clone or minor variation of an existing marketplace product
- Provides real value that buyers would pay for
✓ Proper File Package
- Well-organized folder structure that's easy to navigate
- Production-ready assets — minified CSS/JS, optimized images
- No junk files (
.DS_Store,Thumbs.db,.git,node_modules) - Correct thumbnail dimensions and high-quality preview screenshots
Products that excel across all these criteria may be featured on the homepage and promoted in our newsletter — giving you significant visibility and sales boost.
Why Products Get Rejected
Understanding rejection reasons will save you time and improve your acceptance rate. We categorize rejections into two types:
Soft Rejection Fixable
Your product has potential but needs specific fixes. You'll receive detailed feedback and can resubmit after addressing the issues.
- Minor design inconsistencies — Uneven spacing, misaligned elements, inconsistent border-radius or shadows
- Responsive issues — Layout breaks at certain breakpoints, text overflow, images not scaling
- Code cleanup needed — Unused CSS rules, console warnings, unnecessary comments or debugging code
- Incomplete documentation — Missing installation steps, outdated instructions, no customization guide
- Missing preview assets — Wrong thumbnail dimensions, too few screenshots, blurry images
- Accessibility gaps — Missing alt tags, poor color contrast, no focus states on interactive elements
- Poor listing description — Vague description, missing feature list, no tech stack info
- Unnecessary files in package — Source maps, development configs, or OS-generated files included
Soft-rejected products can be resubmitted unlimited times. Address all feedback points before resubmitting to avoid multiple rounds of review.
Hard Rejection Not Fixable
The product has fundamental issues that can't be resolved with minor fixes. You'd need to submit a significantly different or completely rebuilt version.
- Below quality threshold — Design looks amateurish, outdated (pre-2020 aesthetics), or template-generated
- Duplicate / clone — Too similar to an existing product on the marketplace or a well-known free template
- Broken core functionality — Main features don't work, JavaScript errors on every page, completely non-functional
- No responsive support — Product only works on desktop with no mobile/tablet consideration at all
- Severe code issues — Entirely inline-styled, no semantic HTML, deprecated framework versions
- Insufficient content/scope — Too minimal to justify a paid product (e.g., single-page with no features)
- Copyright violation — Uses copyrighted images, fonts, icons, or code without proper licenses
- Misleading listing — Description or screenshots don't match the actual product
Permanent Ban Zero Tolerance
The following will result in immediate permanent rejection and potential account suspension:
- Malware or malicious code — Any backdoors, crypto miners, or data-harvesting scripts
- Obfuscated code — Encoded or obfuscated JavaScript/PHP to hide functionality
- Stolen content — Repackaging another author's work as your own
- External data collection — Sending user data to external servers without disclosure
- Vulnerability exploitation — Known security vulnerabilities left intentionally
We run automated security scans on every submission. Any product flagged for malicious code will trigger an immediate investigation of all products under your account.
Pre-Submission Checklist
Go through this checklist before hitting submit:
- Product is fully functional with no broken links or errors
- Design is responsive and works across major browsers
- Code is clean, well-commented, and properly formatted
- Documentation with setup and usage instructions is included
- Thumbnail image is 590×300px and clearly represents the product
- At least 3 high-quality screenshots are provided
- All third-party assets are properly licensed and credited
- ZIP file is clean — no
node_modules,.git, or OS junk files - Title and description are clear, accurate, and SEO-friendly
- Pricing is set for both Regular and Extended licenses
- Tags are relevant and category is correctly selected
If you've checked everything above, your product is ready for submission! Head to your seller dashboard and upload your product.