CRO proposals: baseline metrics you need before you promise lifts

Conversion rate optimization sounds like math. Clients hear “we will increase conversions” and picture a guaranteed revenue line going up. You know the reality: without baselines, clean tracking, and enough traffic, you are guessing. A strong CRO proposal does not dodge that truth. It uses it to look more professional than competitors who promise magic.

This article is for freelancers who sell audits, A/B tests, landing page improvements, funnel fixes, or ongoing optimization retainers. You will get a baseline metrics checklist, proposal wording that sets honest expectations, and patterns that separate you from vague “growth hacker” pitches.

What clients think CRO is versus what you actually deliver

Many buyers confuse CRO with:

• Redesigning the site because they are bored with it
• Running ads better
• Writing blog posts for SEO
• Installing a popup app and calling it a strategy

Your proposal should define CRO in one sentence tied to their goal:

I help you measure how visitors move toward [signup / purchase / booking], find where they drop off, and test focused changes on the highest-leverage steps.

That framing keeps you out of unrelated scope fights later.

Why baseline metrics belong in the proposal, not only after hire

If you wait until after you are hired to ask for analytics access, you look unprepared. If you promise “+30% conversions” before you have seen data, you look reckless. Putting baseline questions in the proposal does three things at once:

1. Shows you work with evidence, not vibes.
2. Filters clients who have no tracking (you can still help, but the plan changes).
3. Protects you from being blamed when a test “fails” because traffic was too thin.

Clients who have been burned by marketers often relax when you sound like an analyst, not a carnival barker. For broader trust issues, see why clients ignore your proposals.

The baseline metrics checklist

Ask for these before you promise lifts. Group them in your proposal as “what I need to scope work.”

Traffic and sample size

• Sessions or users per week on the page or funnel you will optimize
• Mobile versus desktop split (mobile often explains “mystery” drop-offs)
• Main traffic sources (paid, organic, email, direct)

Why it matters: A/B tests need enough visitors. Low traffic means sequential tests, longer timelines, or qualitative research instead of quick wins.

Conversion definition

• What counts as a conversion (purchase, lead form, trial start, call booked)
• Secondary actions you care about (email signup, add to cart)
• Whether conversions are tracked once per user or per session

Why it matters: Clients argue about results when the goal was never defined.

Current rates (even rough)

• Overall conversion rate or step rates if they have a funnel
• Form completion rate, cart abandonment, or checkout steps if relevant
• Revenue per visitor if they will share it (optional but powerful for prioritization)

Why it matters: You cannot claim improvement without a starting point.

Tracking integrity

• Analytics tool (GA4, Plausible, Mixpanel, etc.)
• Tag manager or hardcoded events
• Known gaps (thank-you page not firing, cross-domain issues, ad blockers)
• Consent banners or GDPR mode affecting data

Why it matters: Many “failed” CRO projects are tracking projects in disguise.

Page and funnel inventory

• URL(s) in scope
• Steps between landing and conversion
• Tools in the stack (Shopify, Webflow, custom app, Calendly embed, etc.)

Why it matters: Scope creep starts when “one landing page” becomes twelve routes and three subdomains.

Constraints

• Legal or compliance limits on claims, testimonials, urgency copy
• Brand guidelines that restrict layout tests
• Dev bandwidth for implementing winners

Why it matters: The best test idea is worthless if it cannot ship.

You do not need perfect data to propose. You need honesty about what is missing and how you will handle it.

How to phrase baselines in the proposal (copy-ready)

Use a short section titled Current data and assumptions. Example:

Before I recommend tests, I would confirm how [conversion] is tracked today and establish a baseline for [page/funnel]. If analytics is incomplete, milestone 1 includes an audit and a simple measurement plan so we do not debate results later.

Helpful inputs: weekly sessions, current conversion rate (even a range), mobile share, and access to analytics plus the ad account if paid traffic is major.

That paragraph does more selling than ten adjectives.

What to promise instead of fake percentage lifts

Avoid:

• “Guaranteed 2x ROI in 30 days”
• “I will increase conversions by 40%” with no baseline
• “Unlimited tests until you are happy”

Prefer:

• A process: audit, hypothesis backlog, prioritized tests, implementation support, readout
• Conditions for lifts: “Meaningful test conclusions usually need [X] sessions per variant; I will tell you if volume requires a longer window or different methods.”
• Deliverables: research summary, wireframes or copy variants, test plan, results report

If the client demands numbers, offer ranges tied to scenarios, not guarantees:

If baseline conversion is near industry norms for [sector], gains often come from fixing obvious friction first (clarity, speed, form errors). Larger lifts usually require offer or traffic changes, not button color alone.

That sounds conservative and still competent.

Proposal structure that fits CRO work

1) Outcome in their language

Restate the business outcome: more qualified leads, higher checkout completion, lower cost per acquisition from paid traffic, etc.

2) Baseline and access

List metrics and tools you need. Offer a paid audit if access is messy.

3) Phased plan

Typical phases:

• Phase 1: Analytics and UX audit, baseline report, prioritized hypothesis list
• Phase 2: Quick fixes that do not need split tests (copy clarity, form errors, speed basics)
• Phase 3: Test design, implementation coordination, results readout
• Phase 4 (optional): Ongoing retainer with a monthly test cadence

Link phase thinking to milestones when the client never mentioned them.

4) What you deliver in each phase

Be concrete: Loom walkthrough, written report, Figma markup, dev tickets, test spec document, spreadsheet of results.

5) Pricing posture

CRO is often poorly scoped. Options:

• Fixed audit with clear page limit
• Hourly with a cap for research plus implementation support
• Retainer with defined tests per month and meeting cadence

Use fixed-price project proposal pricing when you box Phase 1, and be explicit about what triggers a new quote (extra locales, entire checkout rebuild, new product line).

Sample opening for a CRO-heavy job post

Hi [Name],

You want more [conversions/leads/sales] from [page/campaign] without guessing. I would start by confirming how conversions are tracked today and establishing a baseline on [URL], then prioritize fixes and tests where traffic actually supports learning.

If you can share weekly sessions, current conversion rate (even approximate), and analytics access, I can outline Phase 1 as a short audit with a ranked backlog. If tracking is incomplete, Phase 1 includes measurement cleanup so later tests are trustworthy.

I have worked on [similar industry/page type] where the first wins were usually [specific friction type], not random layout changes.

Happy to propose a fixed audit milestone first if you prefer low risk before a retainer.

When the client has almost no data

This is common on small sites. Your proposal should not pretend you will run classic A/B tests immediately.

Adjust the plan:

• Qualitative review (session recordings if allowed, heuristic review, survey)
• Smaller iterative releases with before/after period comparison (weak but better than nothing)
• Fix obvious technical issues (broken forms, slow mobile, confusing headline)
• Set expectations: “Statistical tests may need [traffic threshold]; until then we optimize in larger batches and monitor trends.”

Clients respect that more than a fake test roadmap.

Red flags in CRO job posts

Consider a tighter proposal or skipping the bid when:

• They want guaranteed lifts with no analytics access
• They refuse dev changes but expect funnel redesign results
• Budget is tiny for “full CRO ongoing”
• They blame the last freelancer with no data shared
• Scope is “entire website” with one-week deadline

You can still bid with a small paid audit milestone to reduce risk. See unpaid test task requests if they ask for free spec work upfront.

Collaborating with designers and developers

CRO proposals often fail because implementation is orphaned. State who ships winners:

• You deliver test specs and copy; their dev implements
• You implement in [tool] within agreed guardrails
• Joint milestone: design variant in Figma, dev deploy, you monitor

If the job is really a landing page rewrite, say so and borrow structure from landing page copy and design split so lanes stay clear.

Reporting language clients understand

End the proposal with how they will see progress:

• Baseline snapshot document
• Prioritized backlog with effort and impact notes
• Test calendar realistic for their traffic
• Plain-English readout: what we tried, what happened, what we do next

Avoid jargon walls. One defined term per concept is enough.

Mistakes CRO freelancers make in proposals

• Promising percentage lifts with no baseline
• Skipping tracking questions to sound “easy”
• Selling redesign as CRO without measurement
• Ignoring mobile traffic share
• Not defining conversion events
• Unlimited revisions on test variants
• Competing on price against $50 “audit” spam without explaining depth

FAQ

They only want “best practices” tips. Offer a paid audit with a short Loom and written list. Free long audits attract scope abusers.

They have Hotjar but no goals configured. Phase 1 is instrumentation and goal setup. Say that plainly.

They want you to manage ads too. Either add a separate line item or decline. Blended “growth” scope without boundaries burns freelancers.

Can you beat [competitor]‘s rate? Anchor on deliverables and measurement rigor, not hours bragged as cheap.

Pre-send checklist

• Conversion event defined in plain language
• Baseline metrics requested (traffic, rate, tracking)
• Phases with deliverables, not vague “optimization”
• Honest note on test viability given traffic
• Implementation ownership clear
• No guaranteed lift percentages
• One relevant proof point or case pattern
• Clear next step (share access, approve audit milestone)

Cross-check with the proposal checklist and tighten openings using freelance proposal examples for tone reference.

Bottom line

CRO proposals win trust when you sound like you would rather be precise than impressive. Baselines are not bureaucracy. They are how you turn a fuzzy “improve conversions” post into a project you can defend in a client meeting three months later.

Use tools to draft faster if you want, but keep the metrics section and the no-fake-guarantees language human-edited. That is what makes a buyer feel you will not become another marketer who disappears after the invoice.