I've been working with a company for a couple of years now;
Things are generally okay, but I'm starting to contemplate looking for a change or an improvement somewhere... Either a higher salary, significantly more PTO, more work-from-home, etc. Something to make it more 'worth it' for me. I don't necessarily explicitly want to leave, but I find I'm generally just not excited about my job anymore and I feel it would be pretty easy for someone to poach me with the right offer.
I recently updated my resume, and at the end of it, I was feeling very, very confident about myself. Greatest resume to ever walk the earth, exponentially better than the one that I originally applied with a few years ago.
I started to think, If I were to ask for a raise, my manager might just consider the work that I've done here at this company and their personal experiences with me when responding to it... (Which is definitely okay, I've done a good job, I just haven't worked with this manager very long)
However if my manager were to see/look at my resume when responding to that request, I feel it would likely drive home a bit of fear that "Oh..... This person is prepared and will very likely get hired somewhere else at the amount they're asking... It will be a monumental effort for us to replace them if they leave, which from the looks of it they could easily do if we don't give them this...."
and cave;
My question is, is this a normal thing to do when asking for a raise?
I feel like it would be a useful tool, but I feel as though it would also worry them that I'd been looking for other offers or preparing to leave.
If I've gone this far, should I just get an offer or two first anyway?
I'm likely on the higher end of the pay scale for my position already, but I have leverage in that if I were to leave, it would likely take months to fill the position with a new replacement; there's only one of me and I develop/maintain an application that ~500 users rely on each day at our organization; Likely much longer to find someone at the same level of experience (niche market), and even then they would have a very long time (1 year+) to spin up / get acquainted with the system, why things are built the way they are, etc
Edit: This is not a duplicate of the other question on how to go about asking for a raise, because this question is specifically asking, would it be appropriate or confrontational to show/use an updated resume as a negotiating tool when actually asking for the raise. This isn't something that's mentioned or addressed in the suggested duplicate question or its answers.