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CodexValley

Free tools for the work you actually have to do.

Work out real marketplace profit, get product photos and application files right, and download results you can use straight away.

What do you want to get done?

Popular: Etsy fees, profit margin, photo resize

Start with a workspace

Each workspace takes a job from start to finish through several tools in order, and carries your results from one tool to the next where it can.

Seller workspace

Price a product with real fees, compare price options, prepare photos and labels, invoice wholesale buyers and check real profit.

6 steps · Online sellers and small shops

Application workspace

Get an application photo and signature to the exact size, check every file against the rules and put the documents into one pack.

4 steps · Students, job seekers and anyone filling in an online form

Construction workspace

Measure a room, work out paint, tiles and other materials, collect them in a bill of quantities and compare supplier prices.

6 steps · Home builders, contractors and renovators planning a job

Kitchen workspace

Scale a recipe to your number of servings, cost it per portion, compare ingredient prices and turn it into a shopping list.

4 steps · Home cooks, caterers and small food businesses

Property workspace

Add up the real cost of buying, check rental yield and long-term return, compare with renting, and then track rent and running costs.

6 steps · Home buyers, small landlords and property investors

Freelancer workspace

Send a quote, turn it into an invoice, issue a receipt when you are paid and keep track of what every client still owes.

3 steps · Freelancers, consultants and service businesses

All workspaces

Popular tools

Seller Price & Profit Studio

Available

Work out your real profit per sale after fees, shipping and cost of goods, and compare pricing scenarios.

Sellers & Business

Product Image Pack Builder

Available

Resize, crop and compress product photos for several marketplaces at once and download a ZIP.

Sellers & Business

Application File Studio

Available

Prepare your photo and signature to meet an application's size and file rules, and check each rule.

Students & Career

All 86 tools

Browse by what you do

Everyday Life

Budgets, documents, files and dates for daily life.

15 tools

Students & Career

Application photos, signatures, documents and study helpers.

9 tools

Sellers & Business

Marketplace fees, real profit, pricing and product images for online sellers.

16 tools

Real Estate

Rental yield, property costs and listing preparation.

8 tools

Construction

Preliminary quantity and cost estimates for planning.

10 tools

Food & Grocery

Recipe scaling, food cost and shopping lists.

7 tools

Fashion & Clothing

Measurements, size charts and garment costing.

6 tools

Health Administration

Personal records and checklists. Not medical advice.

5 tools

Developer Tools

Formatters, converters and debugging helpers.

10 tools

How it works

  1. 1. Pick a task

    Search for what you need or open a workspace. No account is needed.

  2. 2. Add your details

    Type your numbers or choose your files. Every rate and rule can be checked and changed.

  3. 3. Download the result

    Copy, print or download a report, image set or ZIP that is ready to use.

Guides

All guides

How Etsy fees work, with a worked example

Listing, transaction, payment processing and Offsite Ads fees explained with the current rates, official sources and a profit example.

How eBay fees work for US sellers, with a worked example

The final value fee, the per-order fee and the extra fees that can apply, with the current standard rates, the official source and a profit example.

Markup vs margin: how to price your products

The difference between markup and margin, how to convert one into the other, and how to set a price that still gives you the margin you want after marketplace fees.

Built around three rules

  • Useful for free

    The core tools stay free to use.

  • Your files stay with you

    Our file tools are designed to run in your browser, so your photos and documents are not uploaded.

  • Honest about limits

    Results are estimates, and every rate shows where it came from and when it was checked.