Check a Proxy for IP, DNS and WebRTC Leaks with ToDetect
Check a browser proxy for IP, DNS, WebRTC and time zone leaks with ToDetect's free tools, using measured results from a 4G mobile line as the worked example.
BlogComparisons and analysis
Proxy comparisons and practical analysis.
Compare proxy types, understand common failures and evaluate performance. We explain the reasoning behind each recommendation. Visit our developer guides for setup instructions.
Python 3.15 for Web Scraping: What Installs, What Breaks
pip install scrapy fails on Python 3.15 without a C compiler: brotli has no cp315 wheel. We tested 19 scraping packages with pip and uv to see what else breaks.
Japanese price parsing: yen, width and tax labels
Parse Japanese price fields without losing currency or tax basis. Run a tested Python fixture for fullwidth yen, mixed prices and deliberate review cases.
How Many GB of Proxies Do You Need? Pages per GB, Measured
We loaded 34 public pages three ways through a metering proxy. 1 GB fits about 44,000 HTML-only fetches, or about 900 full Playwright page loads.
SOCKS5 vs SOCKS5h: What 6 Clients Actually Send (Tested)
socks5:// does not mean local DNS in every client. We logged what curl, Requests, HTTPX, aiohttp, Playwright and Node send a SOCKS5 proxy for each scheme.
CONNECT tunnel failed, response 403: Why AI Agents Hit It
Your agent's curl fails with CONNECT tunnel failed, response 403 while other hosts work. The proxy refused the tunnel. How to tell who blocked it, and the fix.
Betting odds API vs scraping: a cost worksheet
Compare odds APIs and authorized scraping by coverage, freshness and modeled collection cost. Use an editable worksheet with clear workload assumptions.
Unlimited residential proxies: what they cost per GB
Turn Mbps- and thread-based unlimited residential proxy plans into cost per GB, find the break-even with your per-GB rate, and check terms before you pay.
NO_PROXY wildcard, leading dot and CIDR: a tested matrix
Which NO_PROXY entries mean the same thing in curl, Python, Node, Go and wget? A loopback test of *, leading dots, CIDR, IPv6 and ports, with raw data.
Multiple Meta Ad Accounts: An Agency Setup Checklist
Manage multiple Meta ad accounts with a client access record, clear team responsibilities and a checklist for access errors, security incidents and routing.
AI agent proxies and compute: choose by responsibility
Map an AI agent's retrieval, runtime and model requirements before choosing services, with a release-note monitoring example and editable worksheet.
MostLogin proxy setup guide: add, test and share proxies
Add a proxy to MostLogin profiles step by step: protocol, host and port, credentials, the IP check, team access, batch import and the mistakes that break it.
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