Keyword Research
Free keyword research tool: expand seed terms into hundreds of buyer-intent and question keywords with instant volume estimates, difficulty scores and CSV export. No signup.
Open →SEO & GEOZero-Token (Instant)
Free Alt Text Generator & Accessibility Checker for Images
Describe the image once and get ready-to-paste alt variations, a live length meter and accessibility checks — plus the decorative-image alt="" rule.
Why use this instead of doing it manually
Free alt text generator: turn what is in an image into concise, screen-reader-friendly alt text under 125 characters, with keyword stuffing, “image of” filler and file-name leaks flagged. No upload.
| Capability | The manual way | With ContentSERP |
|---|---|---|
| Best practice | Describe it and hope it fits | Enforces the 125-char guide and strips “image of” filler |
| Accessibility | Ignored | Recommends empty alt for decorative images |
| SEO safety | Accidental keyword stuffing | Flags repeated keywords and file-name leaks |
| Cost | Paid plugins or vision APIs | Free, runs in your browser |
Frequently asked questions
How long should alt text be?
Aim for under about 125 characters and describe only what a sighted user learns from the image. Most screen readers truncate around that length, so brevity keeps the description usable.
Should decorative images have alt text?
No — set alt="" (empty) so assistive technology skips them. Leaving the attribute off entirely makes screen readers announce the file name, which is noise. The tool gives you the correct snippet when you tick decorative.
Does it include my keyword?
It offers a keyword-aware variation only when the keyword fits naturally and stays within the length budget, and it warns if you repeat it — alt text should serve users first, search engines second.
Is this an AI image describer?
No. It composes and checks alt text from what you tell it is in the image, so it is instant, deterministic and runs fully offline in your browser.
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