pythonrequests.com

Fix 403 Forbidden in python requests

Paste the failing request. Get a version with realistic headers, a Session and a curl_cffi fallback.

 
  
 
 
 
  
 
 
Why a 403 happens and what each fix addresses
 
A 403 from a request that works in the browser means the server told the two apart. The cheapest signals are headers; the next are cookies set by a previous page load; the hardest are the TLS handshake fingerprint and JavaScript challenges.
The wrapper this tool injects handles the first two layers with a Session and browser headers, then retries with curl_cffi impersonating Chrome's TLS fingerprint. It does not solve CAPTCHAs, and it should only be used on content you are permitted to fetch.
 
 
 
Block signal and mitigation
 
 
  
SignalMitigationCovered by wrapper
   
 python-requests User-Agent Browser User-Agent Yes 
 Missing Sec-Fetch / Accept-Language Full header set Yes 
 No session cookies requests.Session() Yes 
 TLS / JA3 fingerprint curl_cffi impersonate="chrome" Fallback 
 JavaScript or CAPTCHA challenge Real browser automation No 
  
 
 
 
  
  
 Python · Header generators Python requests headers generator 
 Browser-accurate header sets as a ready-to-paste dict. Header order and Sec-Fetch values included.  
 Python · cURL converters cURL to Python requests 
 Paste a cURL command, get a runnable requests.request() call. Parsed locally, nothing is uploaded.  
 
 
 
FAQ
 
 
   Why does my script get 403 but the browser works?  
The server is distinguishing your client from a browser. Common signals: the User-Agent, missing Sec-Fetch and Accept-Language headers, no cookies from a prior page load, and the TLS handshake fingerprint.
 
   What does the Cloudflare wrapper do?  
It adds a Session with browser headers and retries through curl_cffi with Chrome TLS impersonation. It cannot solve interactive CAPTCHA challenges.
 
   Is bypassing a 403 allowed?  
Only scrape what you are permitted to. Check the site's terms and robots.txt, and keep request rates polite.