Free Image Hosting for Email Signatures
Upload a logo or photo and get a stable HTTPS URL to paste into Outlook, Gmail, Apple Mail, or Thunderbird. No ads, no expiry, served by a global CDN.
Upload Your Signature Image
JPG, PNG, GIF, or WebP. Max 10MB. Get a stable HTTPS URL to paste in Outlook, Gmail, or any email client.
Why email signatures need hosted images
When you put a logo or photo in an email signature, the image has to live somewhere outside the email itself. Embedding the image as base64 inflates every outgoing message and is silently stripped by Gmail, Outlook, and most spam filters. Attaching it forces every recipient to download a copy and breaks reply threads.
The standard solution is to host the image at a public HTTPS URL and reference it with an <img src="..."> tag in the signature HTML. Your messages stay small, the image renders inline for any client that allows remote images, and you can swap the file later without touching every signature template.
Why Linkyhost for signature images
HTTPS by default
Every image gets a free SSL certificate. Required for Gmail and Outlook for the web to render inline.
Global CDN
Served from edge locations worldwide so signatures load fast in any inbox.
Hotlink-friendly
Direct URL returns the raw image bytes — no preview pages, no auth walls, no rewriting.
No expiry, no ads
Links stay live as long as your account is active. No 7-day trials, no sponsored interstitials.
How to add a hosted image to your signature
Gmail (web)
- Open Settings → See all settings → General.
- Scroll to Signature, create a new signature.
- Click the image icon in the signature toolbar, choose Web Address (URL).
- Paste the Linkyhost URL and click Select.
- Save changes at the bottom.
Outlook (desktop, Microsoft 365)
- File → Options → Mail → Signatures.
- Create or edit a signature.
- Outlook desktop doesn't have a direct "insert by URL" option in the signature editor — instead, paste the image into the editor (it will embed locally) and the HTML you save will reference the local file.
- For a hosted reference, edit the signature HTML directly: open the file in
%APPDATA%\Microsoft\Signaturesand add<img src="https://your-linkyhost-url">.
Outlook on the web
- Settings → View all Outlook settings → Mail → Compose and reply.
- Under Email signature, click the image icon.
- Choose "Insert image inline" and select "From URL." Paste the Linkyhost URL.
- Save.
Apple Mail (macOS)
- Mail → Settings → Signatures.
- Apple Mail also embeds local images by default. To reference a hosted URL, drag the image from your browser (with the Linkyhost URL open) into the signature editor — or edit the signature HTML directly at
~/Library/Mail/V*/MailData/Signatures/.
Thunderbird
- Account Settings → select your account → Signature text.
- Check "Use HTML."
- Paste your signature HTML, including
<img src="https://your-linkyhost-url">.
Recommended specs
- Format: PNG (best for logos with text or transparency) or JPG (best for photos). Avoid WebP if your audience uses older Outlook desktop builds.
- Dimensions: 2× the rendered size. If the signature displays the image at 300px wide, export at 600px for retina sharpness.
- File size: aim for under 50KB. Gmail collapses messages over 102KB and signatures get repeated on every reply, so smaller is better.
- HTTPS only: Linkyhost serves all images over HTTPS. Avoid hosts that return HTTP — Gmail and Outlook block mixed content.
- Set width and height attributes in the signature HTML so the layout doesn't shift while the image loads.
Linkyhost vs other places to host signature images
| Feature | Linkyhost | Imgur | Google Drive | Dropbox |
|---|---|---|---|---|
| Direct image URL | Yes | Gallery page by default | No (preview page) | No (preview page) |
| HTTPS | Yes | Yes | Yes | Yes |
| Renders in Gmail / Outlook signatures | Yes | Sometimes | No | No |
| Link expires | No | After inactivity | If file is moved/deleted | If file is moved/deleted |
| Ads / interstitials | None | Yes on gallery page | No | No |
Google Drive and Dropbox links route through preview pages and require authentication — they don't return raw image bytes, so they won't render in an email signature's <img> tag.
Frequently Asked Questions
Why do I need to host an image for my email signature?
Most email clients block embedded base64 images and stripping attachments mid-thread is messy. The reliable way to put a logo or photo in an email signature is to host the image at a public HTTPS URL and reference it from the signature HTML.
Why not use Google Drive or Dropbox?
Google Drive and Dropbox links route through preview pages or require authentication, so the image won't render inline in most email clients. You need a host that returns the raw image bytes at a hotlink-friendly direct URL.
What dimensions and format should I use?
PNG or JPG at 2× the display size for retina screens. Keep file size under 50KB if possible.
Will the image link expire?
No. Hosted images stay live as long as your account remains active.
Is the URL HTTPS?
Yes. Every Linkyhost image is served over HTTPS with a free SSL certificate.
Can I update the signature image without changing the URL?
Pro accounts can replace the file at the same URL. Free accounts upload a new file with a new URL.
Need to host more than just signature images? See our general image hosting tool, or upload a full website with free HTML hosting.