Image to text
JSON methods
Token tasks
- reCAPTCHA v2
- reCAPTCHA v2 Enterprise
- reCAPTCHA v3
- Cloudflare Turnstile
- GeeTest v3 / v4
- FunCaptcha (Arkose Labs)
- Amazon AWS WAF
- MTCaptcha
- Friendly Captcha
- Lemin Cropped Captcha
- DataDome
- KeyCaptcha
- Capy Puzzle
- Cloudflare Challenge page
- Cutcaptcha
- CyberSiARA
- atbCAPTCHA
- Tencent Captcha
- Prosopo Procaptcha
- CaptchaFox
- Altcha
- NetEase Yidun
- Yandex SmartCaptcha
- VK Captcha
- Binance Captcha
- Custom task (Imperva, Temu and others)
Image to text
How to send a Image to text task to UNLOCK API with createTask or in.php: task type names, every parameter, the solution object, proxy fields and code samples in 7 languages.
- Price
- $0.25 $0.00025 per task
- You send
- The image as base64, up to 100 KB
- You get
- The text on the image
Task type names
This type has one name.
ImageToTextTaskTask object
typeStringRequired
Task type name. Matched in any letter case.
ImageToTextTaskbodyStringRequired
The image as base64 (JPG, PNG or GIF), up to about 100 KB. A data: prefix is allowed.
phraseBooleanOptional
true if the answer has two or more words.
caseBooleanOptional
true if letter case matters.
numericIntegerOptional
0 any characters, 1 digits only, 2 letters only, 3 digits or letters, 4 digits and letters.
mathBooleanOptional
true if the image shows a sum to calculate.
minLengthIntegerOptional
Shortest possible answer. 0 means no limit.
maxLengthIntegerOptional
Longest possible answer. 0 means no limit.
commentStringOptional
Instruction for the solver, for example the question shown above the image.
languagePoolStringOptional
Language of the answer, for example en or ru.
Fields not listed here are passed to the solver as sent.
Request
POST /createTask
{
"clientKey": "YOUR_API_KEY",
"task": {
"type": "ImageToTextTask",
"body": "/9j/4AAQSkZJRgABAQ...",
"case": true
}
}Solution object
Returned in solution when status is ready.
textString
The answer as text.
POST /getTaskResult
{
"errorId": 0,
"taskId": 1001,
"status": "ready",
"solution": {
"text": "w93bx"
},
"cost": "0.00025",
"createTime": 1791640000,
"endTime": 1791640014,
"solveCount": 1
}Code samples
import time, requests
API = "https://unlock-api.com"
KEY = "YOUR_API_KEY"
task = requests.post(f"{API}/createTask", json={
"clientKey": KEY,
"task": {
"type": "ImageToTextTask",
"body": "/9j/4AAQSkZJRgABAQ...",
"case": true
}
}).json()
if task["errorId"]:
raise SystemExit(task["errorCode"])
for _ in range(60): # 60 x 5 s = the 5 minute task limit
time.sleep(5)
r = requests.post(f"{API}/getTaskResult", json={"clientKey": KEY, "taskId": task["taskId"]}).json()
if r["errorId"]:
raise SystemExit(f"{r['errorCode']}: {r.get('errorDescription', '')}") # failed tasks are refunded
if r["status"] == "ready":
print(r["solution"]["text"])
break
else:
raise SystemExit("timed out")const API = "https://unlock-api.com";
const KEY = "YOUR_API_KEY";
const post = (path, body) => fetch(API + path, { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify(body) }).then((r) => r.json());
const task = await post("/createTask", {
clientKey: KEY,
task: {
"type": "ImageToTextTask",
"body": "/9j/4AAQSkZJRgABAQ...",
"case": true
},
});
if (task.errorId) throw new Error(task.errorCode);
let solution = null;
for (let n = 0; n < 60 && !solution; n++) { // 60 x 5 s = the 5 minute task limit
await new Promise((r) => setTimeout(r, 5000));
const r = await post("/getTaskResult", { clientKey: KEY, taskId: task.taskId });
if (r.errorId) throw new Error(r.errorCode + ": " + r.errorDescription); // failed tasks are refunded
if (r.status === "ready") solution = r.solution;
}
if (!solution) throw new Error("timed out");
console.log(solution.text);<?php
$api = "https://unlock-api.com";
$key = "YOUR_API_KEY";
function post($url, $body) {
$c = curl_init($url);
curl_setopt_array($c, [CURLOPT_POST => true, CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ["Content-Type: application/json"], CURLOPT_POSTFIELDS => json_encode($body)]);
return json_decode(curl_exec($c), true);
}
$task = post("$api/createTask", ["clientKey" => $key, "task" => json_decode('{"type":"ImageToTextTask","body":"/9j/4AAQSkZJRgABAQ...","case":true}', true)]);
if ($task["errorId"]) exit($task["errorCode"]);
for ($n = 0; $n < 60; $n++) { // 60 x 5 s = the 5 minute task limit
sleep(5);
$r = post("$api/getTaskResult", ["clientKey" => $key, "taskId" => $task["taskId"]]);
if ($r["errorId"]) exit($r["errorCode"] . ": " . $r["errorDescription"]); // failed tasks are refunded
if ($r["status"] === "ready") break;
}
if ($r["status"] !== "ready") exit("timed out");
print_r($r["solution"]["text"]);package main
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"time"
)
const api = "https://unlock-api.com"
const key = "YOUR_API_KEY"
func post(method string, body map[string]any) map[string]any {
b, _ := json.Marshal(body)
res, err := http.Post(api+"/"+method, "application/json", bytes.NewReader(b))
if err != nil {
panic(err)
}
defer res.Body.Close()
var out map[string]any
json.NewDecoder(res.Body).Decode(&out)
return out
}
func main() {
task := post("createTask", map[string]any{
"clientKey": key,
"task": map[string]any{
"type": "ImageToTextTask",
"body": "/9j/4AAQSkZJRgABAQ...",
"case": true,
},
})
if task["errorId"].(float64) != 0 {
panic(task["errorCode"])
}
for n := 0; n < 60; n++ { // 60 x 5 s = the 5 minute task limit
time.Sleep(5 * time.Second)
r := post("getTaskResult", map[string]any{"clientKey": key, "taskId": task["taskId"]})
if r["errorId"].(float64) != 0 {
panic(r["errorCode"]) // failed tasks are refunded
}
if r["status"] == "ready" {
fmt.Println(r["solution"])
return
}
}
panic("timed out")
}import java.net.URI;
import java.net.http.*;
import java.util.regex.*;
public class Solve {
static final String API = "https://unlock-api.com", KEY = "YOUR_API_KEY";
static final HttpClient HTTP = HttpClient.newHttpClient();
static String post(String method, String json) throws Exception {
var req = HttpRequest.newBuilder(URI.create(API + "/" + method))
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString(json)).build();
return HTTP.send(req, HttpResponse.BodyHandlers.ofString()).body();
}
public static void main(String[] args) throws Exception {
String task = "{\"type\":\"ImageToTextTask\",\"body\":\"/9j/4AAQSkZJRgABAQ...\",\"case\":true}";
String created = post("createTask", "{\"clientKey\":\"" + KEY + "\",\"task\":" + task + "}");
Matcher id = Pattern.compile("\"taskId\":(\\d+)").matcher(created);
if (!id.find()) throw new RuntimeException(created);
for (int n = 0; n < 60; n++) { // 60 x 5 s = the 5 minute task limit
Thread.sleep(5000);
String r = post("getTaskResult", "{\"clientKey\":\"" + KEY + "\",\"taskId\":" + id.group(1) + "}");
if (r.contains("\"errorId\":1")) throw new RuntimeException(r); // failed tasks are refunded
if (r.contains("\"status\":\"ready\"")) { System.out.println(r); return; }
}
throw new RuntimeException("timed out");
}
}using System.Net.Http.Json;
using System.Text.Json;
const string Api = "https://unlock-api.com";
const string Key = "YOUR_API_KEY";
var http = new HttpClient();
async Task<JsonElement> Post(string method, object body) =>
await (await http.PostAsJsonAsync($"{Api}/{method}", body)).Content.ReadFromJsonAsync<JsonElement>();
var task = await Post("createTask", new {
clientKey = Key,
task = JsonSerializer.Deserialize<JsonElement>("""
{"type":"ImageToTextTask","body":"/9j/4AAQSkZJRgABAQ...","case":true}
""")
});
if (task.GetProperty("errorId").GetInt32() != 0) throw new Exception(task.GetProperty("errorCode").GetString());
for (var n = 0; n < 60; n++) { // 60 x 5 s = the 5 minute task limit
await Task.Delay(5000);
var r = await Post("getTaskResult", new { clientKey = Key, taskId = task.GetProperty("taskId").GetInt64() });
if (r.GetProperty("errorId").GetInt32() != 0) throw new Exception(r.GetProperty("errorCode").GetString()); // failed tasks are refunded
if (r.GetProperty("status").GetString() == "ready") { Console.WriteLine(r.GetProperty("solution")); return; }
}
throw new Exception("timed out");curl -s https://unlock-api.com/createTask \
-H "Content-Type: application/json" \
-d '{"clientKey":"YOUR_API_KEY","task":{"type":"ImageToTextTask","body":"/9j/4AAQSkZJRgABAQ...","case":true}}'
# {"errorId":0,"taskId":1001}
curl -s https://unlock-api.com/getTaskResult \
-H "Content-Type: application/json" \
-d '{"clientKey":"YOUR_API_KEY","taskId":1001}'
# {"errorId":0,"status":"processing"} then {"errorId":0,"status":"ready","solution":{...},"cost":"0.001"}in.php form method
The same task with the classic form request. res.php returns the answer as text.
in.php, res.php
curl -s "https://unlock-api.com/in.php" -d "key=YOUR_API_KEY&method=base64&body=BASE64_IMAGE&json=1"
# {"status":1,"request":"1001"}
curl -s "https://unlock-api.com/res.php?key=YOUR_API_KEY&action=get&id=1001&json=1"
# {"status":0,"request":"CAPCHA_NOT_READY"} then {"status":1,"request":"ANSWER"}