保存如下代码为书签，并放在书签栏即可：

javascript:if(typeof koe_35_p==='undefined'){var koe_35_select=false;var koe_35_p=document.createElement('p');koe_35_p.innerText=' 请选择图片 ';koe_35_p.setAttribute('style','position:fixed; top:0; left:0; padding: 3px 10px; height:30px; line-height:30px; text-align:center; background-color:#000; color:#FFF; font-size:26px; z-index:99999999');document.body.appendChild(koe_35_p);var koe_35_imgs=document.querySelectorAll('img');koe_35_imgs.forEach(function(img){img.addEventListener('click',koe_35_search)});function koe_35_search(){var thisImg=this;var img_offset=getOffset(thisImg);koe_35_p.innerText=' 正在搜索 ';var newImg=new Image();newImg.crossOrigin='*';newImg.onload=function(){var koe_35_canvas=document.createElement('canvas');koe_35_canvas.width=newImg.naturalWidth;koe_35_canvas.height=newImg.naturalHeight;var koe_35_ctx=koe_35_canvas.getContext('2d');koe_35_ctx.drawImage(newImg,0,0,koe_35_canvas.width,koe_35_canvas.height);var koe_35_xhr=new XMLHttpRequest();koe_35_xhr.open('POST','https://trace.moe/api/search','true');koe_35_xhr.setRequestHeader('content-type','application/json');koe_35_xhr.send(JSON.stringify({image:koe_35_canvas.toDataURL('image/jpeg',0.8)}));koe_35_xhr.onreadystatechange=function(){if(koe_35_xhr.readyState===4&&koe_35_xhr.status===200){var json=JSON.parse(koe_35_xhr.responseText);if(json.docs.length>0){var at_m=parseInt(json.docs[0].at/60);var at_s=parseInt(json.docs[0].at%(60));koe_35_p.innerText=' 成功！正在加载视频 ';var src='https://trace.moe/preview.php?anilist_id='+json.docs[0].anilist_id+'&file='+encodeURIComponent(json.docs[0].filename)+'&t='+json.docs[0].at+'&token='+json.docs[0].tokenthumb;var videoElement=document.createElement('video');videoElement.autoplay=true;videoElement.loop=true;videoElement.controls=true;videoElement.setAttribute('style','position: absolute; z-index: 9999999');videoElement.style.top=img_offset.top+'px';videoElement.style.left=img_offset.left+'px';videoElement.style.width=thisImg.style.width;videoElement.style.height=thisImg.style.height;videoElement.src=src;videoElement.addEventListener('canplaythrough',function(){koe_35_select=true;koe_35_p.innerText=json.docs[0].title+'，第 '+json.docs[0].episode+' 集，时间：'+at_m+':'+at_s});document.body.appendChild(videoElement)}else{koe_35_p.innerText=' 没有搜索到 '}}}};newImg.src=this.src;koe_35_imgs.forEach(function(img){img.removeEventListener('click',koe_35_search)})}function getOffset(curEle){var totalLeft=null,totalTop=null,par=curEle.offsetParent;totalLeft+=curEle.offsetLeft;totalTop+=curEle.offsetTop;while(par){if(navigator.userAgent.indexOf('MSIE 8.0')===-1){totalLeft+=par.clientLeft;totalTop+=par.clientTop}totalLeft+=par.offsetLeft;totalTop+=par.offsetTop;par=par.offsetParent}return{left:totalLeft,top:totalTop}}}else{koe_35_p.innerText=' 选择图片 ';koe_35_p.style.display='block';if(koe_35_select){koe_35_imgs.forEach(function(img){img.addEventListener('click',koe_35_search)})}}

需要以图搜番时候点击书签，然后选择图片即可。

视频教程：https://www.bilibili.com/video/BV1Yg4y1v7ZG

Gitee：https://gitee.com/imba97/js Github：https://github.com/imba97/js

调用接口：https://trace.moe/