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href="/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cookies/how-can-i-stop-my-internet-browser-tracking-my-info/cy/" class="gel-pica-bold" title="Sut alla i stopio fy mhorwr rhyngrwyd rhag olrhain fy ngwybodaeth?">Sut alla i stopio fy mhorwr rhyngrwyd rhag olrhain fy ngwybodaeth?</a></li></ul></div> </div> <div class="gel-layout__item gel-bp-m-2/3 gel-bp-l-3/4 gel-layout__item-nopadding"> <article id="a519fba5-eb7d-4e9e-a7e9-01a7aa40ce03" class="gel-explainer-ops"> <h1 class="gel-trafalgar-bold utb-heading-color">Sut alla i newid fy ngosodiadau cwcis?</h1> <p class="gel-timestamp gel-brevier">Diweddarwyd y dudalen: 14 Rhagfyr 2021</p>  <div class="gel-pica"> <div class="gel-explainer--generic"> <div class="gel-copy"> <p>Bydd rhai nodwedd hanfodol ar wefannau’r BBC ddim yn gweithio heb cwcis. A gallai diffodd cwcis eraill effeithio ar y ffordd y gallwch fwynhau ein gwasanaethau.</p> <p>Gwiriwch eich gosodiadau cwcis isod a <strong>throi ymlaen</strong> unrhyw gwci rydych chi’n hapus i’w gael.</p> <p>Nid oes modd diffodd cwcis sydd wir eu hangen, ond gallwch eu diffodd yng ngosodiadau eich porwr.</p> <p>Gallwch droi cwcis swyddogaethol a pherfformiad ymlaen ac i ffwrdd isod, a bydd eich <strong>dewis yn cael ei gofio</strong>.</p> <p>Gallwch hefyd <a href="https://web.archive.org/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cookies/what-do-i-need-to-know-about-cookies/cy/">ddod i wybod mwy am gwcis a’u swyddogaethau</a> ar ein tudalennau eraill.</p> <p>Os ydych chi wedi dewis i atal cwcis trydydd parti yn eich porwr, ni fydd eich dewisiadau cwcis yn cael eu cludo drosodd o bbc.co.uk i bbc.com a fel arall. Sicrhewch eich bod chi'n gosod eich dewisiadau cwcis ar <a href="https://web.archive.org/web/20220311201447/http://www.bbc.com/usingthebbc/cookies/how-can-i-change-my-bbc-cookie-settings/cy/">bbc.com</a> a <a href="https://web.archive.org/web/20220311201447/http://www.bbc.co.uk/usingthebbc/cookies/how-can-i-change-my-bbc-cookie-settings/cy/">bbc.co.uk</a>.</p> </div> </div> <section class="gel-table-settings"> <h3 class="gel-great-primer-bold">Cwcis sydd wir eu hangen</h3> <div class="cell-item"> <div class="cell-control"> <div class="ios-toggles"> <input type="button" name="bbc_strict_cookie_button" id="bbc_strict_cookie_button" data-id="bbc_strict_cookie" class="ios-button alwayson" disabled=""/> <input type="checkbox" name="bbc_strict_cookie" id="bbc_strict_cookie" class="ios-toggle alwayson" disabled="" checked="checked"/> <label for="bbc_strict_cookie" class="ios-checkbox-label gel-great-primer-bold" data-off="I ffwrdd" data-on="Ymlaen"></label> </div> </div> <div class="cell-label gel-pica"> <p>Mae gwir angen y cwcis hyn er mwyn eich galluogi chi i symud o amgylch y wefan a defnyddio ei nodweddion. Heb y cwcis hyn, ni fydd modd darparu gwasanaethau rydych chi wedi gofyn amdanynt.</p> <p><a href="/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cymru/cookies/how-does-the-bbc-use-cookies">Mwy am y cwcis sydd wir eu hangen</a></p> </div> </div> </section> <section class="gel-table-settings"> <h3 class="gel-great-primer-bold">Cwcis swyddogaethol</h3> <div class="cell-item"> <div class="cell-control"> <div class="ios-toggles"> <input type="button" name="bbc_functional_cookie_button" id="bbc_functional_cookie_button" data-id="bbc_functional_cookie" class="ios-button" disabled=""/> <input type="checkbox" name="bbc_functional_cookie" id="bbc_functional_cookie" class="ios-toggle" disabled=""/> <label for="bbc_functional_cookie" class="ios-checkbox-label gel-great-primer-bold" data-off="I ffwrdd" data-on="Ymlaen"></label> </div> </div> <div class="cell-label gel-pica"> <p>Mae’r cwcis hyn yn caniatáu i wefannau gofio eich dewisiadau a darparu nodweddion gwell a mwy personol. </p> <p><a href="/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cymru/cookies/how-does-the-bbc-use-cookies">Mwy am y cwcis swyddogaethol</a></p> </div> </div> </section> <section class="gel-table-settings"> <h3 class="gel-great-primer-bold">Cwcis perfformiad</h3> <div class="cell-item"> <div class="cell-control"> <div class="ios-toggles"> <input type="button" name="bbc_performance_cookie_button" id="bbc_performance_cookie_button" data-id="bbc_performance_cookie" class="ios-button" disabled=""/> <input type="checkbox" name="bbc_performance_cookie" id="bbc_performance_cookie" class="ios-toggle" disabled=""/> <label for="bbc_performance_cookie" class="ios-checkbox-label gel-great-primer-bold" data-off="I ffwrdd" data-on="Ymlaen"></label> </div> </div> <div class="cell-label gel-pica"> <p>Mae’r switsh yn troi <a href="https://web.archive.org/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cookies/what-do-i-need-to-know-about-cookies/cy/#148ebd7e0b62d24d2ba109420c7e1745">cwcis perfformiad </a>y BBC ymlaen. Mae cwcis perfformiad yn ein helpu i wella perfformiad BBC Ar-lein.</p> <p><a href="/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cymru/cookies/how-does-the-bbc-use-cookies">Rhestr o’r cwcis perfformiad</a></p> </div> </div> </section> </div> <div class="gel-pica"> <div class="gel-explainer--generic"> <h2 class="gel-great-primer-bold">Cwcis Hysbysebu ar gyfer defnyddwyr tu allan i'r DU</h2> <div class="gel-copy"> <p>Os ydych chi tu allan i’r DU, byddwch chi’n gweld hysbysebion, gan gynnwys argymhellion am gynnwys masnachol, cynnwys wedi ei noddi a negeseuon hyrwyddo. Rydyn ni'n defnyddio incwm o hysbysebion i helpu i ariannu gwasanaethau'r BBC, sy'n cynnwys rhoi mynediad i'r wefan yma o du allan i'r DU.</p> <p><a href="https://web.archive.org/web/20220311201447/https://www.bbc.com/usingthebbc/cookies/how-does-the-bbc-use-cookies-for-advertising/cy/">Os ydych chi tu allan i'r DU, cliciwch yma i newid eich gosodiadau am hysbysebion wedi eu personoleiddio</a>.</p> <p>Nodwch, os ydych chi yn y DU ac yn clicio'r ddolen uchod, efallai y byddwch chi'n gweld rhyngwyneb dewisiadau hysbysebion. Nid yw technoleg hysbysebu yn cael ei ddefnyddio yn y DU, ac ni fydd unrhyw ddewisiadau yn achosi i'ch data gael ei rannu gan bartneriaid hysbysebu tra rydych chi'n defnyddio'r wefan o fewn y DU.</p> </div> </div> </div>  <ul class="button-block-article"> <li class="gel-pica-bold icons icon-document" title="Gweld fersiwn lawn Polisi Preifatrwydd a Chwcis y BBC"><a href="/web/20220311201447/https://www.bbc.co.uk/usingthebbc/cymru/privacy/privacy-policy/" title="Gweld fersiwn lawn Polisi Preifatrwydd a Chwcis y BBC">Gweld fersiwn lawn Polisi Preifatrwydd a Chwcis y BBC</a></li> </ul> </article> </div> </div> <div class="gel-layout gel-features-opts"> <div class="gel-layout__item"> <h2 class="gel-double-pica gel-mv">Mwy am Breifatrwydd a Thelerau ar draws y BBC</h2> <ul class="gel-feature-list"> <li class="gel-feature-item navp-card-gallery primary-item"> <a class="" href="https://web.archive.org/web/20220311201447/http://www.bbc.co.uk/webwise/guides/about-cookie" aria-label="What are Cookies? 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