Skip to content
NexCaptcha

Captcha type · Pattern

Image to text captcha solver API

Classic distorted-character captchas read by OCR in under two seconds. Send a base64 image or a URL, get the string back. The cheapest type we price.

Also searched asnormal captcha solverocr captcha apibase64 captcha solverdistorted text captchaimage captcha recognition

Price
$0.75
per 1,000
Token acceptance
99.9%
Median solve
1.9s
p95 solve
3.6s

[ 01 ]What it looks like

Four to six warped characters over noise lines, sometimes an arithmetic sum to work out.

[ 02 ]Why it is hard

Any single image is easy; the long tail is not. Every site picks its own font, noise pattern, colour inversion and character set, and Chinese-character variants need a CJK model rather than Latin OCR. Accuracy is the whole product at this price point: at a million solves a month, the gap between 92% and 98% is the margin.

[ 03 ]How we solve it

Post the image as a base64 body. There is no sitekey, no page URL and no proxy: the request carries the picture and the response carries the string, which is why this is the cheapest type on the rate card. Hints narrow the search space when you know the format, so numeric, minLength, maxLength, case and math cut both error rate and latency. The model is retrained on live traffic, with the CJK and Latin character sets trained separately.

[ 02 ]Solve it in five lines

Solve it in five lines

Post the task, get the token. Our SDKs collapse creation, polling and retries into one call.

image-to-text.sh
curl -s https://api.nexcaptcha.net/createTask \
  -H "Content-Type: application/json" \
  -d '{
    "clientKey": "YOUR_API_KEY",
    "task": {
      "type": "ImageToTextTask",
      "body": "...",
      "numeric": "...",
      "minLength": "..."
    }
  }'

Required parameters

API task type
ImageToTextTask
body
required
numeric
required
minLength
required
Difficulty
Easy

[ 03 ]Where this one shows up

Where this one shows up

E-commerce Price & Inventory Monitoring

Price feeds that finish their run before the data goes stale.

Enterprise RPA & Back-office Automation

Unattended robots stay unattended when a portal challenges.

Market Research & Data Aggregation

One call shape across sources that each protect differently.

Accessibility Automation

For people the audio challenge does not actually serve.

Ad Verification & Brand Protection

Check live placements from the consumer’s geo, continuously.

[ 05 ]Questions about this one

Questions about this one

$0.75 per 1,000 images, the cheapest rate on the site. 2Captcha lists the same type at $0.50 per 1,000; the difference buys the dedicated pool, the CJK model and the no-charge-on-failure policy.

Neither. The task is the image alone, so there is no sitekey to read, nothing bound to your IP and nothing to keep in sync with your session. Send the base64 body and read the string back.

Yes, on a separate CJK model rather than a Latin one with an extra alphabet bolted on. Chinese-character captchas are still standard in CN enterprise systems, government portals and legacy forums, and that traffic is what the model is trained on.

Report it back on the task id and the solve is refunded. Sending the hints you already know, such as numeric or minLength, is the cheapest way to avoid the case in the first place.

Solve your first thousand on us.

Create a key, paste it into the sample above, and watch a real token come back. No card, no sales call.

Get your API keyTalk to an engineer