Proposal software for web designers

Scope creep starts before the first wireframe. When the proposal does not define page count, revision rounds, or what happens when the client changes their mind mid-project, every undefined detail becomes a future argument.

Define scope in writing before work starts

Spell out what is included: page count, revision rounds, browser support, CMS training. And what is not. Nothing assumed, nothing negotiated later.

AI-drafted project brief

Describe the project and Prosperus generates a services section. You edit the specifics. The structure is already there so you are not starting from a blank document at 9pm.

Scope and timeline signed together

Clients sign off on the scope and the project schedule at the same time. No separate document to chase. What was agreed is in the proposal.

AI proposal generation

Describe the project: site type, pages, functionality, timeline, CMS. The AI generates a complete proposal draft in minutes. You review, adjust what does not fit, and send. No rewriting the same brief from scratch for every new client.

Package your services

Offer a basic, standard, and premium tier. Design only, design plus development, or full build with SEO and ongoing support. Clients choose their scope. You stop quoting bespoke every time and start presenting options.

Show the build timeline

Phase the project clearly: discovery, wireframes, design, development, and launch, with dates. Clients see what happens in each phase and when. A timeline agreed at the start is harder to push on later.

Include previous work

Add relevant case studies: website screenshots, live links, project context. Choose the examples most relevant to what this client is building. The portfolio supports the price without you having to explain it in the meeting.

Track proposal opens

Know when your proposal was opened, how long they spent on the pricing section, and whether they came back. That tells you when and how to follow up. No more sending a message into the void and waiting for a reply that may never come.

Online signatures

Clients approve and sign in the proposal view. No PDF to export, no separate contract tool at the proposal stage. The scope they agreed to is recorded in the same document they signed.

The details that cause disputes later are the ones missing from the original proposal.

Page counts, revision rounds, responsive breakpoints, copy ownership, CMS training, browser support. These are the specifics that web design projects fall apart on. Not because clients are difficult. Because nobody wrote them down. Prosperus gives you the structure to define all of it clearly before work starts. Clients sign off on scope and timeline together. When “is that included?” comes up three weeks in, the answer is already written.

Free 7-day trial. No card required.

Win more projects, argue over scope less

FAQs

Yes. Prosperus supports both one-time and monthly pricing within the same proposal. Add a care plan or support retainer as a service and include it as part of the package or as a separate line.

Yes. Use the Gantt chart or standard phase timeline to show discovery, design, development, and launch with dates. Clients see the full schedule before signing and agree to it at the same time as the scope.

Yes. Add case studies with screenshots, live links, and project context directly into the proposal. Choose the examples most relevant to what this client is building.

Yes. The service library and proposal builder work for any type of web project regardless of how you split design and development work. Use it for design-only, development-only, or full-build projects.

About 10 minutes to set up your services and brand settings. After that, each proposal generates from your inputs in under 10 minutes. Your first will take slightly longer than your fifth.