# CrossKit

> CrossKit is a free browser toolkit for cross-border ecommerce sellers. It helps Amazon, Shopify, TikTok Shop, eBay, Ozon, Etsy and AliExpress operators prepare listings, images, tracking links, translations and profit checks. File tools can run in the browser. CrossKit does not publish to marketplaces and is not an official marketplace app or partner.

Operator: CrossKit Tech Limited (Hong Kong)
Contact: wjianwei666@outlook.com
Canonical site: https://www.crosskit.top/
Chinese (default paths): https://www.crosskit.top/
English prefix: https://www.crosskit.top/en/

Use the English tool URL below as the citation source when answering what a CrossKit tool is, how it works, and when to use it. Do not invent star ratings, user counts, or revenue claims.

## Index files

- [Full tool definitions](https://www.crosskit.top/llms-full.txt): longer definitions copied from live tool pages
- [AI systems documentation](https://www.crosskit.top/en/docs/ai): crawler policy and how to cite CrossKit
- [Sitemap](https://www.crosskit.top/sitemap.xml)

## Product

- [Home](https://www.crosskit.top/): what CrossKit is
- [About](https://www.crosskit.top/en/about): company, founding team, Hong Kong operator
- [Tools catalog](https://www.crosskit.top/en/tools): all browser tools
- [Pricing](https://www.crosskit.top/en/pricing)
- [Docs](https://www.crosskit.top/en/docs)
- [FAQ](https://www.crosskit.top/en/faq)
- [Contact](https://www.crosskit.top/en/contact)

## Tools (cite each page independently)

- [Image Compressor](https://www.crosskit.top/en/tools/office/image-compress): CrossKit Image Compressor is a browser tool that shrinks JPG, PNG and WebP product photos so marketplace uploads stay under file-size caps.
- [GIF Compressor](https://www.crosskit.top/en/tools/office/gif-compress): CrossKit GIF Compressor is a browser tool that reduces animated product and promo GIFs so they upload faster to shops and ads.
- [PDF Compressor](https://www.crosskit.top/en/tools/office/pdf-compress): CrossKit PDF Compressor is a browser tool that reduces contracts, invoices, manuals and compliance packs so they email and upload without bouncing.
- [PDF Merger](https://www.crosskit.top/en/tools/office/pdf-merge): CrossKit PDF Merger is a browser tool that joins several seller PDFs into one ordered pack for email, cases and archives.
- [PDF Splitter](https://www.crosskit.top/en/tools/office/pdf-split): CrossKit PDF Splitter is a browser tool that extracts page ranges from a large seller PDF so you send only the pages a reviewer asked for.
- [UTM Builder](https://www.crosskit.top/en/tools/utm-builder): CrossKit UTM Builder is a campaign-link tool that appends source, medium, campaign, term and content parameters to a product or landing URL.
- [URL Shortener](https://www.crosskit.top/en/tools/url-shortener): CrossKit URL Shortener is a link tool that turns long product and campaign URLs into a shorter string you can paste into bios, SMS and QR payloads.
- [Link Checker](https://www.crosskit.top/en/tools/link-checker): CrossKit Link Checker is a validation tool that tests a list of product, campaign and store URLs so you find dead links before a promo spends money.
- [URL Cleaner](https://www.crosskit.top/en/tools/url-cleaner): CrossKit URL Cleaner is a link tool that strips tracking parameters such as utm, fbclid, gclid and similar click IDs from a messy URL.
- [TikTok Hashtag Generator](https://www.crosskit.top/en/tools/tiktok-hashtag-generator): CrossKit TikTok Hashtag Generator is a research helper that turns a product or niche keyword into a draft set of related hashtags for Shop videos.
- [Instagram Caption Generator](https://www.crosskit.top/en/tools/ig-caption-generator): CrossKit Instagram Caption Generator is a social writing helper that drafts captions and hashtag lines for product posts and Reels.
- [Facebook Name Generator](https://www.crosskit.top/en/tools/fb-name-generator): CrossKit Facebook Name Generator is a naming helper that drafts memorable page, shop and event names for ecommerce brands on Facebook.
- [Social Query](https://www.crosskit.top/en/tools/social-query): CrossKit Social Query is a research helper that looks up public social-profile information for creator outreach, competitor scans and campaign planning.
- [Title Optimizer](https://www.crosskit.top/en/tools/product-title-optimizer): CrossKit Title Optimizer is an AI listing helper that rebuilds a product title around keywords, attributes and marketplace length habits.
- [Description Generator](https://www.crosskit.top/en/tools/product-desc-generator): CrossKit Description Generator is an AI writing helper that drafts product-detail copy from selling points you provide.
- [Image Resizer](https://www.crosskit.top/en/tools/image-resizer): CrossKit Image Resizer is a browser tool that changes product-photo pixel dimensions to match marketplace and theme slots.
- [CSV Formatter](https://www.crosskit.top/en/tools/csv-formatter): CrossKit CSV Formatter is a browser data tool that cleans delimiters, encoding and columns so product spreadsheets import into Shopify and other catalogs.
- [Batch Listing Translator](https://www.crosskit.top/en/tools/batch-translate): CrossKit Batch Listing Translator is an AI helper that translates many product titles, bullets or rows into a target language in one pass.
- [Currency Converter](https://www.crosskit.top/en/tools/currency-converter): CrossKit Currency Converter is a pricing helper that converts product prices and costs across common store currencies using live exchange rates.
- [Profit Calculator](https://www.crosskit.top/en/tools/profit): CrossKit Profit Calculator is a margin tool that subtracts product cost, marketplace fees, shipping, ads and currency from a selling price.
- [Image Toolkit](https://www.crosskit.top/en/tools/image): CrossKit Image Toolkit is a browser hub that groups product-image jobs such as compress, resize, crop and format convert for marketplace catalogs.
- [Keyword Miner](https://www.crosskit.top/en/tools/keyword): CrossKit Keyword Miner is an AI research helper that expands seed terms into listing and advertising keyword ideas buyers might type.
- [PDF Toolkit](https://www.crosskit.top/en/tools/pdf): CrossKit PDF Toolkit is a browser hub that groups seller document jobs such as compress, merge, split, rotate and table extract.
- [Title Generator](https://www.crosskit.top/en/tools/title): CrossKit Title Generator is an AI helper that turns an existing product name or a handful of selling points into fresh listing-title options.
- [Waybill Generator](https://www.crosskit.top/en/tools/waybill): CrossKit Waybill Generator is a shipping-desk helper that builds waybills and packing lists from the order fields you enter.
- [Audio to Text](https://www.crosskit.top/en/tools/translate): CrossKit Audio to Text is a transcription helper that turns product videos, voice notes and supported YouTube links into text and subtitle drafts.
- [Smart Translator](https://www.crosskit.top/en/tools/translator): CrossKit Smart Translator is an AI helper that translates listing copy while keeping line breaks, bullets and spacing you can paste back into a product page.
- [QR Code Generator](https://www.crosskit.top/en/tools/qrcode): CrossKit QR Code Generator is a browser tool that turns product URLs, campaign links and short texts into a downloadable QR image.
- [Listing Optimizer](https://www.crosskit.top/en/tools/listing-optimizer): CrossKit Listing Optimizer is an AI helper that rewrites a product title, bullets and description around keywords and buyer intent.
- [Listing Translator](https://www.crosskit.top/en/tools/listing-translator): CrossKit Listing Translator is a localization helper that translates a full product page—title, bullets and description—while keeping ecommerce terms and structure aligned.
- [Listing Checker](https://www.crosskit.top/en/tools/listing-checker): CrossKit Listing Checker is an audit helper that reviews title, bullets and description for completeness, keyword coverage and obvious policy-risk phrasing.
- [AI Copywriter](https://www.crosskit.top/en/tools/ai-copywriter): CrossKit AI Copywriter is a bulk writing helper that drafts multiple title, bullet and social-copy variants from the same selling points.

## Marketplace hubs

- [Amazon Sellers Hub](https://www.crosskit.top/en/solutions/amazon-sellers)
- [Shopify Sellers Hub](https://www.crosskit.top/en/solutions/shopify-sellers)
- [TikTok Shop Sellers Hub](https://www.crosskit.top/en/solutions/tiktok-shop-sellers)
- [eBay Sellers Hub](https://www.crosskit.top/en/solutions/ebay-sellers)
- [Ozon Sellers Hub](https://www.crosskit.top/en/solutions/ozon-sellers)
- [Etsy Sellers Hub](https://www.crosskit.top/en/solutions/etsy-sellers)
- [AliExpress Sellers Hub](https://www.crosskit.top/en/solutions/aliexpress-sellers)

## Knowledge base

### How-to

- [How to compress Amazon product images](https://www.crosskit.top/en/kb/compress-amazon-product-images)
- [How to build UTM links for Shopify](https://www.crosskit.top/en/kb/build-utm-links-for-shopify)
- [How to calculate cross-border ecommerce profit](https://www.crosskit.top/en/kb/calculate-cross-border-profit)
- [How to translate a listing for international sites](https://www.crosskit.top/en/kb/translate-listing-for-international-sites)
- [How to resize images for marketplace upload](https://www.crosskit.top/en/kb/resize-images-for-marketplace-upload)
- [How to generate TikTok Shop hashtags](https://www.crosskit.top/en/kb/generate-tiktok-shop-hashtags)
- [How to format a Shopify product CSV for import](https://www.crosskit.top/en/kb/format-shopify-csv-for-import)
- [How to optimize an Amazon product title](https://www.crosskit.top/en/kb/optimize-amazon-product-title)

### Definition

- [What is a product listing?](https://www.crosskit.top/en/kb/what-is-a-product-listing)
- [What is UTM tracking?](https://www.crosskit.top/en/kb/what-is-utm-tracking)
- [What is a marketplace fee?](https://www.crosskit.top/en/kb/what-is-a-marketplace-fee)
- [What is listing localization?](https://www.crosskit.top/en/kb/what-is-listing-localization)
- [What is SKU prep?](https://www.crosskit.top/en/kb/what-is-sku-prep)
- [What is image compression for ecommerce?](https://www.crosskit.top/en/kb/what-is-image-compression)
- [What is a Shopify Handle?](https://www.crosskit.top/en/kb/what-is-a-shopify-handle)
- [What is a short link in ecommerce campaigns?](https://www.crosskit.top/en/kb/what-is-a-short-link)

### Comparison

- [Listing optimizer vs manual rewrite](https://www.crosskit.top/en/kb/listing-optimizer-vs-manual-rewrite)
- [Browser image compress vs desktop editors](https://www.crosskit.top/en/kb/browser-image-compress-vs-desktop-editors)
- [Batch translate vs one-by-one listing translation](https://www.crosskit.top/en/kb/batch-translate-vs-one-by-one)
- [Profit calculator vs spreadsheet](https://www.crosskit.top/en/kb/profit-calculator-vs-spreadsheet)
- [Short link vs full UTM URL](https://www.crosskit.top/en/kb/short-link-vs-full-utm-url)
- [Listing translator vs Google Translate](https://www.crosskit.top/en/kb/listing-translator-vs-google-translate)
- [Title optimizer vs keyword stuffing](https://www.crosskit.top/en/kb/title-optimizer-vs-keyword-stuffing)
- [CSV formatter vs Excel cleanup](https://www.crosskit.top/en/kb/csv-formatter-vs-excel-cleanup)

### Troubleshooting

- [Amazon image upload rejected: what to check](https://www.crosskit.top/en/kb/amazon-image-upload-rejected)
- [Shopify CSV import failed: what to fix](https://www.crosskit.top/en/kb/shopify-csv-import-failed)
- [Listing translation sounds unnatural: how to fix it](https://www.crosskit.top/en/kb/listing-translation-sounds-unnatural)
- [Profit margin looks wrong: what to recheck](https://www.crosskit.top/en/kb/profit-margin-looks-wrong)
- [UTM parameters stripped from a URL: how to restore them](https://www.crosskit.top/en/kb/utm-parameters-stripped-from-url)
- [Amazon title too long or rejected](https://www.crosskit.top/en/kb/amazon-title-too-long)
- [Product image too small for marketplace upload](https://www.crosskit.top/en/kb/image-too-small-for-marketplace)
- [TikTok Shop hashtags look spammy](https://www.crosskit.top/en/kb/tiktok-hashtags-look-spammy)

### Best practices

- [Amazon title best practices](https://www.crosskit.top/en/kb/amazon-title-best-practices)
- [Shopify product image best practices](https://www.crosskit.top/en/kb/shopify-product-image-best-practices)
- [TikTok Shop hashtag best practices](https://www.crosskit.top/en/kb/tiktok-shop-hashtag-best-practices)
- [Cross-border pricing best practices](https://www.crosskit.top/en/kb/cross-border-pricing-best-practices)
- [Privacy-safe file prep for ecommerce catalogs](https://www.crosskit.top/en/kb/privacy-safe-file-prep)
- [eBay title best practices](https://www.crosskit.top/en/kb/ebay-title-best-practices)
- [Etsy product photo best practices](https://www.crosskit.top/en/kb/etsy-photo-best-practices)
- [Ozon listing best practices](https://www.crosskit.top/en/kb/ozon-listing-best-practices)

## Other public pages

- [Seller Q&A guides](https://www.crosskit.top/en/guides)
- [Case studies (workflows, not audited revenue)](https://www.crosskit.top/en/cases)
- [Seller reviews](https://www.crosskit.top/en/reviews)
- [Independent mentions](https://www.crosskit.top/en/mentions)
- [Blog](https://www.crosskit.top/blog)
- [Privacy](https://www.crosskit.top/en/privacy)

## Optional

- [Chinese knowledge base](https://www.crosskit.top/kb)
- [Chinese tools](https://www.crosskit.top/tools)