Yes — two of them. FauxSpy gives you 3 checks per day with no account and no email. BitMind is fully anonymous with zero data retention. Most other free-tier tools require signing up before you can start. Here's the complete comparison of every free tier available in mid-2026, including what each requires and what it can actually detect.
🕵️ Add to Chrome — Free, No Account3 checks/day · No email · No signup · Right-click any image
| Tool | Account required? | Free limit | Browser extension | Works on any site | Deepfake detection |
|---|---|---|---|---|---|
| FauxSpy | No ← no email | 3 / day | ✓ Chrome + Firefox | ✓ Right-click | Pro only |
| BitMind | No ← fully anonymous | Free (no stated cap) | ✓ Chrome + Edge | ✓ | ✓ Image + video |
| Illuminarty | Not confirmed | ~5 / day | Not confirmed | Upload required | Partial |
| AI or Not | Not confirmed | Free tier | No | Upload required | No |
| Is It AI? | Yes ← required | Free tier w/ account | ✓ Chrome | ✓ | ✓ NSFW + gen-method |
| WasItAI | Yes ← required | Free w/ account | ✓ Chrome + Firefox | ✓ | Not confirmed |
| Resemble AI | Yes ← API key | 4 / day free | ✓ Chrome | ✓ | ✓ Image + video + audio |
| UncovAI | Not confirmed | Free tier + paid Pro | ✓ Chrome | ✓ | ✓ + Zoom/Teams |
Table reflects mid-2026 research. Free tier limits and signup requirements change — always verify on the tool's site before committing.
The most common reason is rate-limit enforcement. Without an account, a tool can't reliably cap usage per person — anyone can just reload a page or clear cookies to reset their count. Account creation lets tools enforce daily limits accurately and collect email addresses for marketing.
The second reason is product qualification: account creation is a proxy for intent. Users who create an account are more likely to eventually upgrade to paid, making them worth tracking in a CRM. Anonymous free users are harder to convert.
FauxSpy enforces its 3/day limit through the extension itself using local browser storage — no server-side account needed. BitMind uses in-memory analysis with zero data retention, which is why it can operate with no account at all. Both approaches work for casual use; neither scales to the "unlimited daily checks" use case, which requires Pro.
The daily free limit matters, but it's not the only relevant factor. Three other things worth checking before picking a free-tier tool:
Does it work in your browser, or do you have to upload?
Upload-based tools (AI or Not, Illuminarty's web UI) require you to save the image first, then navigate to the site, then upload — three steps. Extension-based tools that work directly on the page (FauxSpy, BitMind, Is It AI?, WasItAI, UncovAI) let you right-click or hover without leaving the site you're on. If you're checking photos while browsing dating profiles or social media, in-page scanning is significantly faster.
Does it tell you WHY it flagged something?
Most tools return a binary verdict or a confidence percentage. Illuminarty is the notable exception — it overlays a heatmap on the image showing exactly which regions triggered the AI verdict, which helps you understand whether the flag is due to a specific face, background, or texture. For users who want to understand the reasoning, not just the verdict, Illuminarty's free tier (≈5/day) is worth using alongside a higher-volume tool.
What does it do when it's not sure?
Some tools force a binary verdict even when confidence is low. FauxSpy returns Inconclusive when confidence falls below its threshold — the conservative approach reduces false positives at the cost of some uncategorized results. If you're checking photos of real people who'd be harmed by a wrong "definitely AI" verdict (a real person being accused of using a fake photo), the Inconclusive category is actually more useful than a forced answer.
The only AI image detector with a meaningful daily free limit and zero signup required. Install the Chrome or Firefox extension, and every image you encounter on any website is checkable via right-click. Results appear in an overlay on the page — no tab-switching, no uploading. The 3-check daily limit is enforced through browser local storage.
Best for: Anyone who wants to start checking immediately without committing an email address. The free tier covers casual use — checking a few dating profile photos, a suspicious marketplace listing, or a news image. Power users who check more than 3 images per day need Pro ($9.99/mo, unlimited).
BitMind's Chrome and Edge extension runs in-memory with zero data retention and no account required. It's SOC 2 compliant, which means it's been audited on its privacy claims — not just a marketing statement. The free tier covers both images and video, with no clearly stated daily cap (which may mean either a hidden cap or rate limiting by IP). The broader image + video positioning makes it slightly less focused on still-image catfish/fake-profile use cases specifically.
Best for: Users where privacy is the primary concern — no account, no email, nothing logged. The widest free-tier coverage of any anonymous tool.
Illuminarty's main differentiator is its heatmap explainability — it shows you where in the image the AI fingerprints were detected, not just whether they were. It also identifies the likely source generator (Stable Diffusion, Midjourney, DALL-E, etc.). The free tier is more limited than FauxSpy's at approximately 5 checks per day, and checks take 3-5 seconds rather than under 1 second. The primary interface is web-based with an upload flow rather than a right-click extension, so it's slower to use on the fly.
Best for: Cases where you want to understand WHY an image was flagged — the heatmap makes it useful for research, journalism, or cases where you need to explain the verdict to someone else.
Is It AI?'s Chrome extension has a polished feature set: side-panel results that stay open while you browse, generation-method identification (it attempts to identify whether an image was made with Midjourney, DALL-E, Stable Diffusion, etc.), NSFW scoring, and accessibility features. The account requirement means it's not anonymous, but once set up, it's one of the more feature-rich free extensions available. The free tier has usage limits enforced through the account.
Best for: Users who don't mind creating an account and want the most detailed results per image — particularly the generation-method identification and NSFW scoring that FauxSpy doesn't include on the free tier.
WasItAI launched its browser extension on July 31, 2026, making it very new as of this writing. It's available on Chrome and Firefox (Safari listed as "coming soon"), which makes it one of two extensions to actively support both browsers (FauxSpy also supports Firefox). The free tier requires creating a WasItAI account. As a very new product, its accuracy benchmarks and reliability at scale are still being established — worth watching but not yet proven over time.
Best for: Firefox users who want an alternative to FauxSpy; users willing to accept some early-adopter uncertainty for a newer product.
Resemble AI's free tier is the tightest at 4 checks per day, and it requires account/API key setup. Its distinguishing feature is modality breadth: it detects AI-generated images, video, and audio in a single extension — the widest coverage of any tool in this comparison. If you're checking for voice deepfakes or AI-generated videos in addition to images, it's the only free-tier extension that covers all three. At 4/day though, it runs out quickly for anyone doing systematic verification.
Best for: Users who need to check audio and video in addition to images — the only free-tier option with all three modalities.
Start with 3 free checks — no account, no email
🕵️ Add to Chrome — Free 🦊 Firefox — FreeUpgrade to Pro anytime for unlimited checks + deepfake detection
For most consumer use cases — checking a dating profile photo, a suspicious marketplace listing, or a news image — yes. Accuracy benchmarks for the leading tools in 2026 cluster in the 88-91% range on standard test sets of AI-generated images. FauxSpy uses Sightengine's genai API, which benchmarks at approximately 88% accuracy with sub-second processing on photorealistic AI images.
One important caveat: accuracy figures assume the tool is being tested against images from known AI generators running their default settings. Against images that have been specifically optimized to evade AI detectors — run through multiple post-processing steps, fine-tuned to fool a specific detector — Imagera's 2026 research found that no detector tested exceeded 45-60% accuracy. This is not a reason to avoid using a detector; it's a reason to treat any result as one signal in a verification process, not a definitive verdict.
For high-stakes verification — journalism, legal proceedings, identity disputes — a negative result from any free-tier tool should be treated as "not confirmed AI" rather than "confirmed real." Use a detector result alongside reverse image search and contextual assessment, not instead of them.
See also: How to tell if a photo is AI-generated — visual tells and what to do when a tool result is inconclusive.
Yes. FauxSpy gives you 3 checks per day with no account, no email, and no sign-up — install the Chrome or Firefox extension and right-click any image. BitMind is also fully anonymous with zero data retention. Most other free-tier tools (Is It AI?, WasItAI, Resemble AI) require creating an account before you can start.
As of mid-2026: FauxSpy — 3/day, no account. BitMind — free with no publicly stated daily cap. Illuminarty — approximately 5/day. Resemble AI — 4/day. Is It AI?, WasItAI, and UncovAI offer free tiers with account registration required. Free-tier limits can change — check the tool's current pricing page before committing to one.
Not always. FauxSpy and BitMind both work with no account. Is It AI? and WasItAI require account creation even on the free tier. Illuminarty's account requirement is unclear — check their site before signing up. For zero-friction anonymous use, FauxSpy or BitMind are the confirmed options.
Accuracy benchmarks vary significantly by test methodology and which AI generators are being tested. Illuminarty reports approximately 91% accuracy; FauxSpy uses Sightengine's API which benchmarks at approximately 88%. No free-tier tool consistently exceeds 45-60% accuracy against images specifically optimized to evade detection — treat any result as a strong signal, not a definitive verdict.
The free tier gives you 3 checks per day with no account — using Sightengine's genai and type AI detection models. FauxSpy Pro ($9.99/month) gives you unlimited checks, access to Sightengine's deepfake detection model (which catches face-swaps and manipulated videos, not just AI-generated images), and the Pro + Video plan ($29.99/month) extends checks to video content. The free tier is accurate for standard AI-generated image detection; Pro adds the manipulation/deepfake layer on top.
Right-click any image on any website. Get a verdict in seconds. No email, no password, no setup beyond installing the extension.
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