Guides and tutorials about cookie management, formats and browser debugging.https://cookieman.pro/enhttps://cookieman.pro/guides/fix-host-prefix-cookie-rejected/https://cookieman.pro/guides/fix-host-prefix-cookie-rejected/__Host- cookies must be Secure, Path=/, and host-only (no Domain). Paste broken JSON, correct the fields, then import on that host over HTTPS.Mon, 17 Aug 2026 00:00:00 GMT__Host- cookie rejected__Host- prefix__Secure- cookiehost prefix cookie Chromehttps://cookieman.pro/guides/fix-samesite-none-without-secure/https://cookieman.pro/guides/fix-samesite-none-without-secure/Chrome rejects SameSite=None unless Secure is set. The converter will not override the browser. Paste JSON, set secure true, then import on HTTPS.Sun, 16 Aug 2026 00:00:00 GMTSameSite=None without SecureSameSite None rejectedSameSite=None Secure requiredcookie SameSite Nonehttps://cookieman.pro/guides/fix-httponly-prefix-as-comment/https://cookieman.pro/guides/fix-httponly-prefix-as-comment/Naive parsers skip every # line and delete HttpOnly session cookies. CookieMan keeps #HttpOnly_ rows. Paste the file here to rewrite it.Sat, 15 Aug 2026 00:00:00 GMT#HttpOnly_ commentHttpOnly cookies.txtHttpOnly prefix Netscapecurl HttpOnlyhttps://cookieman.pro/guides/fix-cookie-missing-domain-localhost/https://cookieman.pro/guides/fix-cookie-missing-domain-localhost/Header strings and JSON maps have no domain, so CookieMan writes localhost and warns. Convert to JSON Array, set a real host, then import or export Netscape.Fri, 14 Aug 2026 00:00:00 GMTCookie missing domaindefaulted to localhostcookie domain localhostHeader string no domainhttps://cookieman.pro/guides/fix-netscape-milliseconds-expiry/https://cookieman.pro/guides/fix-netscape-milliseconds-expiry/A 13-digit Netscape expiry is milliseconds, not Unix seconds. CookieMan divides values greater than 1e12 by 1000 and warns. Paste the file here to rewrite column 5.Thu, 13 Aug 2026 00:00:00 GMTcookies.txt millisecondsNetscape expiry milliseconds13-digit cookie timestampyt-dlp cookies expiryhttps://cookieman.pro/guides/fix-skipped-invalid-netscape-line/https://cookieman.pro/guides/fix-skipped-invalid-netscape-line/CookieMan skips a Netscape row without seven fields. Editors that turn tabs into spaces are the usual cause. Paste the file here to reconstruct it.Wed, 12 Aug 2026 00:00:00 GMTSkipped invalid Netscape linecookies.txt spaces not tabsNetscape tabscookies.txt not loadinghttps://cookieman.pro/guides/fix-could-not-detect-cookie-format/https://cookieman.pro/guides/fix-could-not-detect-cookie-format/CookieMan emits this warning when the paste is not JSON, Netscape, Cookie header, Set-Cookie or Base64. Strip the BOM, extract cookie text, then convert.Tue, 11 Aug 2026 00:00:00 GMTCould not detect cookie formatcookie format detection failedunknown cookie formatCookieMan detectFormathttps://cookieman.pro/guides/chips-partitioned-cookie-export/https://cookieman.pro/guides/chips-partitioned-cookie-export/Partitioned cookies need JSON Array with partitionKey.topLevelSite. Netscape, headers and Set-Cookie drop the key, so Chrome stores the wrong partition.Mon, 10 Aug 2026 00:00:00 GMTCHIPS cookiespartitioned cookie exportpartitionKey topLevelSitepartitioned Set-Cookiehttps://cookieman.pro/guides/samesite-cookies-txt-loss/https://cookieman.pro/guides/samesite-cookies-txt-loss/Netscape cookies.txt has no SameSite column. JSON → Netscape → JSON always yields unspecified. Keep JSON Array when Lax, Strict or None must survive Chrome import.Sun, 09 Aug 2026 00:00:00 GMTSameSite cookies.txtSameSite NetscapeSameSite lost exportSameSite JSONhttps://cookieman.pro/guides/base64-cookies-json/https://cookieman.pro/guides/base64-cookies-json/Paste a Base64-encoded cookie dump (JSON, Netscape or header). The decoder unwraps it, reports the inner format, and serialises JSON Array, cookies.txt or a header.Sat, 08 Aug 2026 00:00:00 GMTBase64 cookiesdecode cookie Base64Base64 JSON cookiescookie export Base64https://cookieman.pro/guides/cookie-header-vs-set-cookie/https://cookieman.pro/guides/cookie-header-vs-set-cookie/A Cookie request header is name=value pairs. Set-Cookie response lines carry Domain, Path, flags and Expires. Convert each separately — they are not interchangeable.Fri, 07 Aug 2026 00:00:00 GMTCookie vs Set-CookieSet-Cookie to JSONCookie header formatrequest vs response cookieshttps://cookieman.pro/guides/json-map-vs-json-array/https://cookieman.pro/guides/json-map-vs-json-array/A JSON map is name→value only. CookieMan fills domain=localhost, path=/, session=true and warns. Use JSON Array when you need to import into Chrome.Thu, 06 Aug 2026 00:00:00 GMTJSON map cookiesJSON array vs mapcookie JSON objectlocalhost default domainhttps://cookieman.pro/guides/json-array-vs-cookies-txt/https://cookieman.pro/guides/json-array-vs-cookies-txt/Side-by-side mapping of CookieMan JSON Array fields to Netscape cookies.txt. SameSite, partitionKey and store metadata never survive the seven-column file.Wed, 05 Aug 2026 00:00:00 GMTJSON vs cookies.txtcookies.txt field mappingJSON Array Netscapecookie format comparisonhttps://cookieman.pro/guides/axios-cookie-header/https://cookieman.pro/guides/axios-cookie-header/Convert a JSON cookie array to a Cookie header for Axios in Node. Browsers ignore this header. HttpOnly cannot appear on the wire.Tue, 04 Aug 2026 00:00:00 GMTAxios Cookie headerAxios cookiesJSON to Cookie headeraxios headers Cookiehttps://cookieman.pro/guides/puppeteer-cookies-json/https://cookieman.pro/guides/puppeteer-cookies-json/Paste the array from page.cookies() or browser.cookies() and convert it to Netscape or CookieMan JSON. expires -1 is a session cookie; SameSite is kept only in JSON.Mon, 03 Aug 2026 00:00:00 GMTPuppeteer cookiespage.cookies JSONPuppeteer to cookies.txtPuppeteer CookieParamhttps://cookieman.pro/guides/playwright-storage-state-cookies/https://cookieman.pro/guides/playwright-storage-state-cookies/Paste a Playwright storageState file. The converter unwraps the cookies array, treats expires -1 as a session cookie, and writes Netscape for curl or Chrome JSON.Sun, 02 Aug 2026 00:00:00 GMTPlaywright storageStatePlaywright cookies.txtstorageState to JSONPlaywright expires -1https://cookieman.pro/guides/httpx-cookies-txt/https://cookieman.pro/guides/httpx-cookies-txt/Convert JSON or a Cookie header to Netscape cookies.txt and load it in httpx.Client. httpx has no cookies.txt reader — use http.cookiejar, then copy into the client.Sat, 01 Aug 2026 00:00:00 GMThttpx cookieshttpx cookies.txthttpx CookieJarhttpx Netscapehttps://cookieman.pro/guides/python-requests-cookiejar/https://cookieman.pro/guides/python-requests-cookiejar/Convert browser JSON to Netscape for Requests via MozillaCookieJar, or to a Cookie header. Set domains before you call the host.Fri, 31 Jul 2026 00:00:00 GMTPython requests cookiesMozillaCookieJarrequests cookies.txtrequests CookieJarhttps://cookieman.pro/guides/httpie-session-cookies/https://cookieman.pro/guides/httpie-session-cookies/Convert a JSON cookie export into a Cookie header for httpie -A or a Netscape jar for curl-compatible sessions. Domains must be real hosts, not localhost.Thu, 30 Jul 2026 00:00:00 GMTHTTPie cookieshttpie sessionHTTPie Cookie headerhttpie cookies.txthttps://cookieman.pro/guides/wget-load-cookies/https://cookieman.pro/guides/wget-load-cookies/Convert a JSON cookie export to Netscape cookies.txt for wget --load-cookies. Keep session cookies with --keep-session-cookies or wget will drop expiry 0 on save.Wed, 29 Jul 2026 00:00:00 GMTwget --load-cookieswget cookies.txtwget --save-cookieswget session cookieshttps://cookieman.pro/guides/curl-cookies-txt/https://cookieman.pro/guides/curl-cookies-txt/Turn a Chrome JSON export into the Netscape file curl -b and -c expect: tabs, #HttpOnly_ prefixes, Unix-second expiry and a trailing newline.Tue, 28 Jul 2026 00:00:00 GMTcurl cookies.txtcurl -b cookiescurl cookie jarJSON to cookies.txthttps://cookieman.pro/guides/har-set-cookie-to-json/https://cookieman.pro/guides/har-set-cookie-to-json/CookieMan does not parse a whole HAR JSON file. Copy the Set-Cookie lines out of the response and convert them to a JSON array with Domain, Path, flags and Expires.Mon, 27 Jul 2026 00:00:00 GMTHAR Set-CookieHAR cookies to JSONSet-Cookie to JSONDevTools HAR cookieshttps://cookieman.pro/guides/yt-dlp-cookies-txt/https://cookieman.pro/guides/yt-dlp-cookies-txt/Convert Chrome JSON or a browser dump to the Netscape file yt-dlp --cookies expects, with tabs, Unix seconds and #HttpOnly_ session cookies intact.Sun, 26 Jul 2026 00:00:00 GMTyt-dlp cookies.txtyt-dlp --cookiesyt-dlp cookies from Chromeyoutube-dl cookies.txthttps://cookieman.pro/guides/selenium-cookies-to-json/https://cookieman.pro/guides/selenium-cookies-to-json/Paste the list from WebDriver get_cookies() — expiry, httpOnly, sameSite — and convert it to CookieMan JSON or cookies.txt. expires ≤ 0 becomes a session cookie.Sat, 25 Jul 2026 00:00:00 GMTSelenium cookiesget_cookies JSONSelenium to cookies.txtWebDriver cookieshttps://cookieman.pro/guides/cookie-quick-manager-to-json/https://cookieman.pro/guides/cookie-quick-manager-to-json/Move a Firefox Cookie Quick Manager dump into Chrome: paste cookies.txt or JSON, convert to a JSON array, then import with CookieMan on the matching origin.Fri, 24 Jul 2026 00:00:00 GMTCookie Quick ManagerCookie Quick Manager exportFirefox cookies to ChromeCookie Quick Manager JSONhttps://cookieman.pro/guides/insomnia-cookies-to-cookies-txt/https://cookieman.pro/guides/insomnia-cookies-to-cookies-txt/Take cookies copied from Insomnia’s Cookie Jar or a Cookie header and write a Netscape cookies.txt curl and wget will load. Set domains before you save the jar.Thu, 23 Jul 2026 00:00:00 GMTInsomnia cookiesInsomnia cookie jarInsomnia to cookies.txtInsomnia curlhttps://cookieman.pro/guides/postman-cookies-to-json/https://cookieman.pro/guides/postman-cookies-to-json/Paste a Postman Cookie header and turn name=value pairs into a JSON array. Domains default to localhost until you set them — then import or send via curl.Wed, 22 Jul 2026 00:00:00 GMTPostman cookiesPostman Cookie headerCookie header to JSONPostman to cookies.txthttps://cookieman.pro/guides/get-cookies-txt-locally-to-json/https://cookieman.pro/guides/get-cookies-txt-locally-to-json/Turn a Netscape file from the Get cookies.txt LOCALLY extension into a JSON array that keeps HttpOnly flags, then import it in Chrome or another profile.Tue, 21 Jul 2026 00:00:00 GMTGet cookies.txt LOCALLYcookies.txt to JSONGet cookies.txt LOCALLY JSONNetscape to JSONhttps://cookieman.pro/guides/editthiscookie-json-to-cookies-txt/https://cookieman.pro/guides/editthiscookie-json-to-cookies-txt/Paste an EditThisCookie JSON export and download a tab-separated cookies.txt with #HttpOnly_ prefixes and Unix-second expiry, ready for curl or yt-dlp.Mon, 20 Jul 2026 00:00:00 GMTEditThisCookie JSON to cookies.txtEditThisCookie exportconvert EditThisCookieNetscape cookies.txthttps://cookieman.pro/guides/cookie-editor-alternative/https://cookieman.pro/guides/cookie-editor-alternative/Cookie-Editor is a cookie inspector. CookieMan is a Manifest V3 editor that imports the same JSON and converts it to cookies.txt, headers or Base64.Sun, 19 Jul 2026 00:00:00 GMTCookie-Editor alternativeCookie-Editor ChromeCookie-Editor JSON exportCookieManhttps://cookieman.pro/blog/how-to-edit-cookies-in-chrome/https://cookieman.pro/blog/how-to-edit-cookies-in-chrome/Three ways to view and change browser cookies — DevTools, an extension, and the command line — with the attribute rules that decide whether your edit sticks.Mon, 29 Jun 2026 00:00:00 GMTChromeDebugginghttps://cookieman.pro/blog/netscape-cookies-txt-format-explained/https://cookieman.pro/blog/netscape-cookies-txt-format-explained/The seven tab-separated fields of cookies.txt, the #HttpOnly_ prefix, expiry handling, and how to convert the format for curl, wget and yt-dlp.Sun, 28 Jun 2026 00:00:00 GMTFormatscurlhttps://cookieman.pro/blog/import-export-cookies-between-browsers/https://cookieman.pro/blog/import-export-cookies-between-browsers/Move a logged-in session from one browser or profile to another without losing attributes — which format to pick, and why some cookies refuse to travel.Sat, 27 Jun 2026 00:00:00 GMTWorkflowFormats