Image to Base64
Convert images to Base64 data URIs locally — embed images in HTML, CSS, or API payloads.
Images never leave your browser.
About this tool
Base64 data URIs embed small images directly in HTML or CSS — no separate file request.
Best for tiny icons and email templates; avoid for large photos that bloat page weight.
How to use the Image to Base64
- 1
Upload your image file (processed locally in browser).
- 2
Copy the generated Base64 string or data URI.
- 3
Paste into HTML img src, CSS background, or your development workflow.
When to use Base64
Email clients that block external images may render inline Base64. Dev prototypes benefit from single-file HTML.
Large Base64 strings hurt Core Web Vitals — use CDN URLs for hero images.
Pro tips
- Compress images before encoding to Base64.
- Never commit multi-megabyte Base64 strings to git repos.
Social Media Specs & Character Limits
Optimal text formatting, length guidelines, and parameters for all major platforms:
| Platform | Max Length | Ideal Length | Hashtag Policy |
|---|---|---|---|
| Instagram Feed & Reels | 2,200 chars | 125 - 150 chars | 3 - 5 tags (Recomm.) |
| TikTok Posts | 4,000 chars | 100 - 200 chars | 3 - 5 tags (Ideal) |
| YouTube Description | 5,000 chars | 1,500 chars (SEO) | 3 - 10 tags |
| X / Twitter Post | 280 chars | 100 - 140 chars | 1 - 2 tags |
| LinkedIn Articles & Posts | 3,000 chars | 500 - 1,000 chars | 3 - 5 tags |
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Frequently Asked Questions
Is Base64 conversion done on a server?▼
No. Encoding runs entirely in your browser — images are never uploaded.
When should I use Base64 images?▼
Best for small icons and inline assets — large images bloat HTML and slow page loads.