![]() ![]() I will be honest with you - I don't like Postman (for a number of reasons). Tip #6: VS Code REST Client extension ( humao.rest-client ) for cURL and API debug Have TLS fingerprint of Chrome browser instead of TLS fingerprint of Python which helps to unblock a lot of websites.Use rotating residential proxies (and you can choose multiple proxy locations). ![]() will do even more - not only it will convert your cURL to Python Requests code, it will also leverage special scraping cloud API which will automatically: 5.2 Convert cURL to Python Requests with residential proxies and retries Let's fix this, here is how cURL can be converted to Python code: 5.1 Convert cURL to plain Python Requests onlineĬ is a useful service which will quickly convert your cURL code to Python. JS developers have slight advantage over Python devs: both Chrome and Firefox has "Copy as fetch" along with "Copy as cURL", but there is no "Copy as Python". Three tabs (notice colors on top of each tab) have different cookie storages and proxies. This turns out to be useful not just for scraping, but for general web browsing: for example, Google Play Console was unable to work properly in multi-account Google setup, so you need to log out of all your Google accounts and leave just one every time to check your Android app state! Firefox multi-account containers can be very useful in this case. The best part about containers is that each container can have its own proxy specified via additional extension so you can have three tabs opened, each using its own proxy! Actually Containers recently got out of the box proxy support but I find this separate extension work better for some reason. This is a like an "Incognito" mode in Chrome but in a lot of ways it is more convenient. This allows even faster iterations in testing your ideas.Ĥ.2 Firefox Multi-Account Containers is a better alternative to Chrome Incognito modeįirefox Containers is an extension which effectively turns your browser into a multi-browser environment - each "container" has its own cookies. The killer feature of FF is that you can modify some request and re-send it to the target website without going through cURL copy&pasting! But, it has some convenient features: 4.1 Firefox Edit & Resend Once you are comfortable working in Chrome Dev Tools, you will feel right at home in Firefox Dev Tools - it's very similar. So, typical request for debugging, and with proxy specified, looks like this:Ĭurl -head -v -proxy #4: Firefox is sometimes even better! This is helpful because without suppressing the output you will probably have troubles scrolling back to the headers of the response in your terminal. ![]() 3.3 Hide the output and leave only debug info and headers in cURL v this shows not just http output but also all the headers and the process of client-server interaction. For some reason, it took me some time to get used to! 3.2 Debug the request/response headers in cURL if you do -proxy= you will get curl: option -proxy=: is unknown error. proxy that there is a space and not '=' sign between options in cURL. Let's say you have copied the cURL request from Chrome Dev tools, then you can launch the cURL from your terminal, and here are the options I use a lot: 3.1 Specify proxy in cURL: Tip #3: get proficient with cURL optionsĮven if you prefer to get your hands dirty with JS/Python, learning cURL options is very useful. One of the most used features of Network panel for me is the "Copy as CURL" and "Copy as Node.js fetch" operation which you can do on every network request: Copy as CURL demoįind the relevant request in "Network" tab and right click to get the "Copy -> Copy As CURL" command.Īfter I have copied the cURL command, I usually paste it into my text editor (VS Code with REST.client, read more about this below) and review/modify the parameters which are sent to the target website. Here is the Chrome team video about this part of dev tools: DevTools Network Panel overview Tip #2: "copy as cURL" and "copy as fetch" When debugging responses, I mostly use "Network" tab. ![]() Hotkey to launch Inspector is Option+Cmd+I on Mac. If you have never seen this console, I recommend to check the official Chrome guide. Major part of investigation work happens in Dev Tools console. Tip #1: Use Chrome Dev Tools!Ĭhrome is the main & invaluable scraping tool for me. Later I will publish the second part related to extracting data from from the output. In this writeup I will go through the first part - sending requests & debugging responses effectively.
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